Information processing method, communication device, and storage medium

Abstract

The present disclosure provides an information processing method, a communication device and a storage medium. The method comprises: a first communication device first performing channel state measurement at K moments on the basis of a reference signal sent by a second communication device, so as to obtain K sets of channel state information, K being an integer greater than zero; then generating a channel state information report on the basis of the K sets of channel state information, wherein the channel state information report comprises a first channel state information report part and a second channel state information report part, and the K sets of channel state information are mapped in the first channel state information report part and the second channel state information report part; and then sending the channel state information report to the second communication device, so that, on the basis of the channel state information report, the second communication device can use a corresponding data transmission policy to perform data transmission.

Description

Information processing method, communication device, and storage medium

[0001] Cross-reference to Related Applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202411009582.X, filed on July 25, 2024, the entire contents of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of communication, and particularly relates to an information processing method, a communication device and a storage medium. BACKGROUND

[0004] Multi-antenna technology, as a key means to improve the spectrum efficiency of wireless communication, its performance optimization cannot be separated from accurate channel state information (CSI). With the continuous improvement of communication standard indicators, how to more accurately transmit channel state information at multiple times between communication devices has become the key to the performance improvement of multi-antenna technology.

[0005] In some related technologies, the processing performance of channel state information needs to be improved. SUMMARY

[0006] Embodiments of the present disclosure provide an information processing method, a communication device and a storage medium, which can more accurately transmit channel state information at multiple times between communication devices.

[0007] In one aspect, an information processing method is provided by embodiments of the present disclosure, which is applied to a first communication device, and the method comprises: performing channel state measurement at K time instants according to a reference signal transmitted by a second communication device, to obtain K sets of channel state information, wherein K is an integer greater than zero; generating a channel state information report according to the K sets of channel state information, wherein the channel state information report comprises a first channel state information report part and a second channel state information report part, and the K sets of channel state information are mapped in the first channel state information report part and the second channel state information report part; and transmitting the channel state information report to the second communication device, wherein the channel state information report is used to make the second communication device adopt a corresponding data transmission strategy for data transmission according to the channel state information report.

[0008] On the other hand, this disclosure provides an information processing method applied to a second communication device. The method includes: sending a reference signal to a first communication device, the reference signal being used to enable the first communication device to perform channel state measurements at K time points to obtain K sets of channel state information, where K is an integer greater than zero; receiving a channel state information report sent by the first communication device, wherein the channel state information report is generated by the first communication device based on the K sets of channel state information, the channel state information report including a first channel state information report portion and a second channel state information report portion, the K sets of channel state information being mapped in the first channel state information report portion and the second channel state information report portion; and performing data transmission using a corresponding data transmission strategy based on the channel state information report.

[0009] On the other hand, embodiments of this disclosure also provide a communication device, including: one or more processors; and a memory storing one or more computer programs thereon, wherein when the one or more computer programs are executed by the one or more processors, the one or more processors implement the information processing method as described above.

[0010] On the other hand, embodiments of this disclosure also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the information processing method described above.

[0011] On the other hand, this disclosure also provides a computer program product, including a computer program that, when executed by a processor, implements the information processing method described above.

[0012] In this embodiment, the first communication device first performs channel state measurements at K time points based on a reference signal sent by the second communication device, obtaining K sets of channel state information, where K is a positive integer. Then, it generates a channel state information report based on the K sets of channel state information. This report includes a first channel state information report portion and a second channel state information report portion, with the K sets of channel state information mapped between them. The report is then sent to the second communication device, enabling it to perform data transmission using a corresponding data transmission strategy. Since K sets of channel state information are obtained by performing channel state measurements at K time points based on the reference signal sent by the second communication device, and these K sets are mapped between the first and second channel state information report portions, a single channel state information report can carry K sets of channel state information corresponding to the K time points. This allows for more accurate transmission of channel state information at multiple time points between the first and second communication devices, improving the processing performance of the channel state information. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure;

[0014] Figure 2 is a flowchart of an information processing method provided in an embodiment of this disclosure;

[0015] Figure 3 is a schematic diagram of the arrangement of contents in a CSI report provided in an embodiment of this disclosure;

[0016] Figure 4 is a schematic diagram of the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0017] Figure 5 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0018] Figure 6 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0019] Figure 7 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0020] Figure 8 is a schematic diagram of the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0021] Figure 9 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0022] Figure 10 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0023] Figure 11 is a schematic diagram of the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0024] Figure 12 is a schematic diagram of the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0025] Figure 13 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0026] Figure 14 is a schematic diagram of the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0027] Figure 15 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0028] Figure 16 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0029] Figure 17 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0030] Figure 18 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0031] Figure 19 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0032] Figure 20 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0033] Figure 21 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0034] Figure 22 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0035] Figure 23 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0036] Figure 24 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0037] Figure 25 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0038] Figure 26 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0039] Figure 27 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0040] Figure 28 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0041] Figure 29 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0042] Figure 30 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0043] Figure 31 is a schematic diagram of the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0044] Figure 32 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0045] Figure 33 is a schematic diagram showing the arrangement of contents in a CSI report provided in another embodiment of this disclosure;

[0046] Figure 34 is a schematic diagram of a CQI calculation method provided in an embodiment of this disclosure;

[0047] Figure 35 is a schematic diagram of the CQI calculation method provided in another embodiment of this disclosure;

[0048] Figure 36 is a schematic diagram of the CQI calculation method provided in another embodiment of this disclosure;

[0049] Figure 37 is a flowchart of a data transmission method provided in another embodiment of this disclosure. Detailed Implementation

[0050] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0051] In this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. The terms "first," "second," etc., do not limit the quantity or order of execution, and "first," "second," etc., do not necessarily imply differences.

[0052] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0053] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0054] In this disclosure, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0055] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0056] In this disclosure, suffixes such as “module,” “part,” or “unit” used to represent elements are used only for the purpose of illustrative purposes and have no inherent meaning. Therefore, “module,” “part,” or “unit” can be used interchangeably.

[0057] The technical solutions provided in this disclosure can be applied to various mobile communication networks, such as New Radio (NR) mobile communication networks using 5th generation mobile networks (5G), future mobile communication networks (e.g., 6G mobile communication networks), or multiple communication convergence systems, etc. This disclosure does not limit them.

[0058] The network architecture of the mobile communication network (including but not limited to 3G, 4G, 5G, and future mobile communication networks, such as 6G) in this disclosure embodiment may include network-side devices (e.g., including but not limited to base stations) and receiving-side devices (e.g., including but not limited to terminals). It should be understood that in this example, in the downlink, the first communication node (also referred to as the first communication node device, the first node, or the first communication equipment) can be a terminal-side device, and the second communication node (also referred to as the second communication node device, the second node, or the second communication equipment) can be a base station-side device. Similarly, in the uplink, the first communication node can also be a base station-side device, and the second communication node can also be a terminal-side device. In device-to-device communication between the two communication nodes, both the first and second communication nodes can be base stations or terminals. The first and second communication nodes can be simply referred to as the first node and the second node, respectively.

[0059] For example, taking a network-side device as a base station and a receiving-side device as a terminal, Figure 1 shows a schematic diagram of the architecture of a communication system provided in this embodiment of the present disclosure. As shown in Figure 1, the communication system 10 includes multiple base stations (e.g., base station 21 and base station 22) and multiple terminals (e.g., terminal 31, terminal 32, terminal 33, and terminal 34). The multiple base stations and multiple terminals can communicate with each other. It should be noted that Figure 1 is only an exemplary framework diagram, and the number of devices included in Figure 1 and the names of each device are not limited. Furthermore, in addition to the devices shown in Figure 1, the communication system may also include other devices, such as core network devices.

[0060] In this disclosure, the base station can be a base station in Long Term Evolution (LTE), Long Term Evolution Advanced (LTEA) or an evolved Node B (eNB or eNodeB), a base station device in a 5G network, or a base station in a future communication system (such as a 6G network). The base station can include various macro base stations, micro base stations, home base stations, wireless remotes, reconfigurable intelligent surfaces (RISs), routers, wireless Fidelity (WIFI) devices, or various network-side devices such as primary cells and secondary cells.

[0061] In this disclosure, the terminal is a device with wireless transceiver capabilities, which can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as on ships); and it can also be deployed in the air (e.g., on airplanes, balloons, and satellites). The terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality (VR) terminal, augmented reality (AR) terminal, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical care, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. The embodiments of this disclosure do not limit the application scenarios. The terminal may also be referred to as a user, user equipment (UE), access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication equipment, UE agent, or UE device, etc. The embodiments disclosed herein are not limited to these terms.

[0062] In this disclosure, higher-layer signaling includes, but is not limited to, Radio Resource Control (RRC), Media Access Control control element (MACCE), and other signaling outside of physical layer signaling, such as LPP (LTE Positioning Protocol) higher-layer signaling, NRPPa (NR Positioning Protocol A) higher-layer signaling, and LPP (LTE Positioning Protocol A) higher-layer signaling, where LPP is also used in the NR positioning protocol. Physical layer signaling can also be transmitted between the base station and the terminal, such as transmitting physical layer signaling on the Physical Downlink Control Channel (PDCCH) and the Physical Uplink Control Channel (PUCCH).

[0063] In this disclosure, the indicators for various parameters can also be called indexes or identifiers (IDs). These are completely equivalent concepts and can be used interchangeably. For example, resource identifiers in a wireless system include, but are not limited to, the following: a reference signal resource, a group of reference signal resources, a configuration of reference signal resources, a Channel State Information (CSI) report, a set of CSI reports, a terminal, a base station, a panel, a neural network model, a sub-neural network model, a neural network layer, a precoding matrix, a beam, a transmission mode, a transmitting mode, a receiving mode, a module, a model, a functional module, etc., corresponding to the index. The base station can indicate the identifier of one or a group of resources to the terminal through various higher-layer signaling and / or physical-layer signaling. The terminal can also feed back the identifier of one or a group of resources to the base station through various higher-layer signaling and / or physical-layer signaling.

[0064] In some embodiments, a time instance represents a time period, such as a time slot, which can be a time slot or a mini-slot. A time slot or mini-slot includes at least one symbol. Here, a symbol refers to a time unit within a subframe, frame, or time slot, such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol, a Single-Carrier Frequency Division Multiple Access (SC-FDMA) symbol, or an Orthogonal Frequency Division Multiple Access (OFDMA) symbol. LTE technology in 4G wireless communication and NR technology in 5G wireless communication are based on OFDM. In OFDM technology, the smallest frequency domain unit is a subcarrier, and the smallest time domain unit is an OFDM symbol. To facilitate the use of frequency domain resources, a resource block is defined, which is defined as a specific number of consecutive subcarriers; a bandwidth part (BWP) is also defined, which is defined as another specific number of consecutive resource blocks on a carrier; to facilitate the use of time domain resources, a slot is defined, which is defined as another specific number of consecutive OFDM symbols.

[0065] In some embodiments, transmission includes sending or receiving. For example, sending data or signals, or receiving data or signals.

[0066] In some embodiments, in order to calculate channel state information or perform channel estimation, mobility management, positioning, etc., the base station or user needs to transmit a reference signal (RS). The reference signal includes, but is not limited to, cell-specific reference signal (CRS) and channel-state information reference signal (CSI-RS). CSI-RS includes zero-power CSI-RS (ZP CSI-RS) and non-zero-power CSI-RS (NZP CSI-RS). In addition, the reference signal also includes, but is not limited to, channel-state information-interference measurement (CSI-IM) signal, sounding reference signal (SRS), synchronization signal block (SSB), physical broadcast channel (PBCH), and synchronization signal block / physical broadcast channel (SSB / PBCH). NZPCSI-RS can be used to measure channel or interference, CSI-RS can also be used for tracking, called Tracking Reference Signal (TRS), while CSI-IM is generally used to measure interference, and SRS is used to measure uplink channels. Furthermore, the time-frequency resources used to transmit reference signals include a set of resource elements (REs) called reference signal resources, such as CSI-RS resource, SRS resource, CSI-IM resource, and SSB resource. In this paper, SSB includes synchronization signal blocks and / or physical broadcast channels.

[0067] In some embodiments, in order to save signaling overhead, multiple reference signal resources may be divided into multiple sets (such as CSI-RS resource set, CSI-IM resource set, SRS resource set). Each reference signal resource set includes at least one reference signal resource, and multiple reference signal resource sets may all come from the same reference signal resource setting (such as CSI-RS resource setting, SRS resource setting, where CSI-RS resource setting may be merged with CSI-IM resource setting and both are called CSI-RS resource setting) to configure parameter information.

[0068] In some embodiments, the base station configures measurement resource information, which can be used to acquire channel state information. The measurement resource information includes CN Channel Measurement Resource (CMR) information and / or CM Interference Measurement Resource (IMR) information, where CN and CM are positive integers. The base station configures the measurement resource information in a report config or reporting setting. In some examples, a channel measurement resource information includes at least one channel reference signal resource setting, such as at least one CSI-RS resource setting or at least one SRS resource setting; an interference measurement resource information includes at least one interference reference signal resource setting, such as at least one CSI-IM resource setting. In some examples, a channel measurement resource information includes at least one set of channel reference signal resources, such as at least one CSI-RS resource set or at least one SRS resource set; an interference measurement resource information includes at least one set of interference reference signal resources, such as at least one CSI-IM resource set. In some examples, a channel measurement resource information includes at least one channel reference signal resource, such as at least one CSI-RS resource or at least one SRS resource, and an interference measurement resource information includes at least one interference reference signal resource, such as at least one CSI-IM resource.

[0069] The channel state information transmitted between the base station and the terminal includes a channel quality indicator (CQI) to indicate the channel quality, or a precoding matrix indicator (PMI) to indicate the precoding matrix applied to the base station antenna. One type of CQI reporting format is wideband CQI reporting, where the CQI reporting band reports the channel quality for a single channel, corresponding to the entire band. Another type is subband CQI reporting, where the CQI reporting band provides channel quality information for each subband, with one channel quality corresponding to one subband. Each subband of the CQI reporting band reports one channel quality. This subband is a frequency domain unit, defined as multiple consecutive resource blocks (RBs), for example, N consecutive resource blocks, where N is a positive integer. For ease of description, this disclosure refers to it as a channel quality indicator subband, or a CQI subband, or simply a subband; wherein, the number of resource blocks (e.g., N as described above) is called the size of the CQI subband, or simply the CQI subband size, or simply the subband size. A bandwidth part (BWP) is divided into multiple subbands, and a channel state information reporting band (CSI reporting band) is defined using a subset of the subbands of the bandwidth part (BWP). The CSI reporting band is the frequency band on which channel state information needs to be reported.

[0070] One way to determine channel quality is based on the strength of the reference signal received by the terminal; another way is based on the signal-to-interference-plus-noise ratio (SIR / NDR) of the reference signal received by the terminal. In the channel state information (CQI) reporting band, if the channel quality does not change significantly, reporting CQI using a wideband CQI reporting method can reduce the resource overhead for CQI reporting; if the channel quality varies significantly in the frequency domain, reporting CQI using a sub-band CQI reporting method can increase the accuracy of CQI reporting.

[0071] One type of PMI reporting format is the wideband PMI report, where one PMI is reported for the entire Channel State Information Reporting Band (CSI reporting band), and this PMI corresponds to the entire CSI reporting band. Another type of PMI reporting format is the sub-band PMI report, where each sub-band of the CSI reporting band reports one PMI, or each sub-band of the CSI reporting band reports a component of a PMI. For example, if a PMI consists of X1 and X2, one way to report a component of a PMI for each sub-band of the CSI reporting band is to report one X1 for the entire band and one X2 for each sub-band; another way is to report one X1 and one X2 for each sub-band.

[0072] Another type of PMI reporting format indicates that each subband contains R precoding matrices, where R is a positive integer. In terms of the frequency domain granularity of the feedback precoding matrices, R represents the number of precoding matrix subbands included in each subband, or the number of precoding matrix subbands included in each CQI subband.

[0073] For PMI, one way to process CSI report content is to quantize the precoded matrix, including scalar quantization, vector quantization, and codebook quantization. Another way to process the precoded matrix into precoded matrix information is to encode the precoded matrix. For example, this can be done by compressing the precoded matrix. Yet another example is encoding the precoded matrix using machine learning algorithms or models. For CQI, one way to process CSI report content is based on the rank indicator and precoded matrix information.

[0074] In some embodiments, in order to obtain and report CSI to the second communication node, the first communication node may generate feedback through, but is not limited to, conventional methods, or employ various advanced information processing methods, including but not limited to information processing methods based on Artificial Intelligence (AI). In some examples, the information processing method is implemented through an artificial intelligence network (or neural network, or neural network model, or model).

[0075] In some embodiments, Artificial Intelligence (AI) includes self-learning devices, components, software, modules, models, functional modules, and functional functions such as Machine Learning (ML), Deep Learning, Reinforcement Learning, Transfer Learning, Deep Reinforcement Learning, and Meta-learning. In some embodiments, AI is implemented through an AI network (or neural network), which includes multiple layers, each layer including at least one node. In one example, the neural network includes an input layer, an output layer, and at least one hidden layer. Each layer of the neural network includes, but is not limited to, using at least one of fully connected layers, dense layers, convolutional layers, transposed convolutional layers, directly connected layers, activation functions, normalization layers, and pooling layers. In some embodiments, each layer of the neural network may include a sub-neural network, such as a residual network block (or Resnet block), a dense network (Densenet Block), or a recurrent neural network (RNN). AI networks can be implemented through models, where models can include neural network models. A neural network model includes a neural network model structure and / or neural network model parameters. The neural network model structure can be simply referred to as the model structure, and the neural network model parameters can be simply referred to as network parameters or model parameters. A model architecture defines the structure of a neural network, including the number of layers, the size of each layer, the activation function, the connections, the convolutional kernels and strides, and the convolution type (e.g., 1D convolution, 2D convolution, 3D convolution, hollow convolution, transposed convolution, separable convolution, grouped convolution, expanded convolution, etc.). Network parameters are the weights and / or biases of each layer in the neural network model and their values. A single model architecture can correspond to multiple sets of different neural network model parameter values ​​to adapt to different scenarios. Neural network model parameters are obtained through online or offline training. For example, by inputting at least one sample and label, the neural network model is trained to obtain its parameters.

[0076] In some embodiments, "model" is a general term used to describe a processing method, function, feature, or feature group that a terminal can execute. In some embodiments, "model" is equivalent to function / functionality, functional module, functional entity, processing method, information processing method, implementation, feature, feature group, etc. In some embodiments, each model corresponds to a model indicator (model ID), function indicator, model identity (model ID), or function identity. In some embodiments, the model identity may also have other equivalent names or concepts such as: model index, first identifier, function identifier, model indicator, etc.

[0077] In some embodiments, a model refers to multiple linear or nonlinear components through which the data flow from the original input of a sample to the output target passes. The model includes neural network models, non-artificial intelligence modules for processing information or their corresponding models, and functional components or functions that map input information to output information (this mapping includes both linear and nonlinear mappings).

[0078] In some examples, a model includes a model structure and model parameters. For instance, a neural network model includes a neural network model structure and neural network model parameters, which describe the structure of the neural network and the values ​​of its parameters, respectively. One neural network model structure can correspond to multiple neural network model parameters; that is, the neural network model structures can be the same, but the corresponding neural network model parameter values ​​can be different.

[0079] In some examples, the models include one-sided models and two-sided models. For example, a one-sided model is a model where deployment / inference computation is performed on the terminal side or the base station side, while a two-sided model is a model where deployment is performed on the terminal side and the base station side respectively. The two models need to cooperate to perform inference computation (e.g., the structure of an autoencoder (AE)).

[0080] In embodiments of this disclosure, reporting CSI can also be referred to as transmitting CSI or sending CSI, such as transmitting channel state information carried on uplink transmission resources. The uplink transmission resource and the CSI to be transmitted on the uplink transmission resource are configured or indicated through a channel state information report. In one example, transmitting a CSI report means transmitting the content indicated in the CSI report, including but not limited to channel state information.

[0081] In some embodiments, the antenna is a physical antenna. In some examples, the antenna is a logical antenna. In some examples, port and antenna, antenna port, reference signal port, and pilot port are interchangeable concepts. In some examples, the antenna is a transmitting antenna. In some examples, the antenna is a receiving antenna. In some examples, the antenna is an antenna pair including a transmitting antenna and a receiving antenna.

[0082] This disclosure provides an information processing method applied to a first communication device. As shown in FIG2, the method includes the following steps:

[0083] S11. Based on the reference signal sent by the second communication device, perform channel state measurements at K time points to obtain K sets of channel state information, where K is an integer greater than zero;

[0084] S12. Generate a channel status information report based on K sets of channel status information, wherein the channel status information report includes a first channel status information report part and a second channel status information report part, and the K sets of channel status information are mapped in the first channel status information report part and the second channel status information report part.

[0085] S13. Send a channel status information report to the second communication device. The channel status information report is used to enable the second communication device to perform data transmission according to the corresponding data transmission strategy.

[0086] In some embodiments, the first communication device receives a reference signal, such as a Channel State Information Reference Signal (CSI-RS), and then performs channel state measurements based on the reference information.

[0087] In embodiments of this disclosure, the content of the CSI report transmitted from the first communication device to the second communication device is represented by bits or elements represented by groups of bits. This disclosure does not impose any special limitations on this aspect.

[0088] In the embodiments of this disclosure, the reported CSI report can be divided into two parts: a first channel state information report (Part 1 CSI) and a second channel state information report (Part 2 CSI). The reported CSI report includes K sets of CSIs, where K is a positive integer. A set of CSIs may, but is not limited to, correspond to a single time point. The reported CSI report contains at least the Rank Indicator (RI), Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), Layer Indicator (LI), and Non-Zero Coefficient (NZC). Part 1 CSI may contain RI, CQI, and other information, while Part 2 CSI may contain PMI and some CQI information. Part 1 CSI and Part 2 CSI are independently encoded. When uplink transmission resources are limited and not all CSI information can be transmitted, content can be discarded according to the priority of the CSI information until the conditions are met.

[0089] In some embodiments, Part 1 CSI has a higher priority than Part 2 CSI. To ensure that the second communication device can accurately receive Part 1 CSI, one possible method is, but not limited to, specifying that the modulation order of Part 1 CSI is less than that of Part 2 CSI; another method is specifying that the coding rate of Part 1 CSI is less than that of Part 2 CSI; yet another method is specifying that the MCS level of the transmitted Part 1 CSI is less than that of Part 2 CSI; yet another method is specifying that the bit error rate (BER) / block error rate (BLER) of Part 1 CSI is less than that of Part 2 CSI; yet another method is specifying that the transmit power of Part 1 CSI is higher than that of Part 2 CSI; yet another method is specifying that Part 1 CSI can support repetition or retransmission mechanisms compared to Part 2 CSI.

[0090] In the embodiments of this disclosure, each set of channel state information includes wideband channel quality indication information and multiple sub-band channel quality indication information. The channel state information report includes wideband channel quality indication information corresponding to K sets of channel state information, and all or part of the sub-band channel quality indication information corresponding to each set of channel state information. The sub-band channel quality indication information includes, but is not limited to, sub-band differential channel quality indication information. In one embodiment, the sub-band differential channel quality indication information may represent the absolute value of the sub-band CQI; in another embodiment, the sub-band differential channel quality indication information may represent the differential value of the sub-band CQI. This disclosure uses the example of a channel state information report including multiple sub-band differential channel quality indication information for further description.

[0091] In some embodiments, when the CSI report includes CSI data from multiple time points, the determination of the CSI content and the reporting method need to be further determined based on the specific circumstances. For example, the reporting of PMI and CQI data from multiple time points may differ. In some cases, broadband PMI and / or subband PMI data from multiple time points need to be reported, while broadband CQI data may be partially reported. Subband CQI data may be reported differentially based on broadband CQI data. This disclosure does not impose any special limitations on this aspect.

[0092] In some embodiments, for processing K sets of CSI report content, where K is a positive integer, taking CQI as an example, the solution is as follows:

[0093] 1. All broadband CQIs of the K sets of CSIs and all or part of the subband differential CQIs corresponding to each set of CSIs are reported. By processing the CSI reports in this way, the base station can more accurately understand the channel status, thereby enabling more refined resource scheduling and improving system flexibility.

[0094] In some embodiments, in Part 1 CSI of a CSI report, the broadband CQI of each CSI is arranged sequentially with all or part of the subband differential CQI of each CSI, as shown in Figure 3.

[0095] In some embodiments, in Part 1 CSI of a CSI report, the broadband CQIs of each CSI are arranged sequentially, and then all or part of the subband differential CQIs of each CSI are arranged sequentially. Refer to Figure 4 for the specific arrangement.

[0096] In some embodiments, P sets of wideband CQIs and their corresponding all or part of the subband differential CQIs are placed in Part 1 CSI, where P is an integer greater than zero and less than K. The wideband CQIs of each CSI set are arranged sequentially along with their corresponding all or part of the subband differential CQIs. The remaining KP sets of wideband CQIs and their corresponding all / part of the subband differential CQIs are also arranged sequentially in Part 2 CSI in the same manner. The specific arrangement is shown in Figure 5.

[0097] In some embodiments, P sets of wideband CQIs and their corresponding all or part of the subband differential CQIs are placed in Part 1 CSI, where P is an integer greater than zero and less than K. The wideband CQIs of each of the P sets of CSIs are arranged sequentially, and then the all or part of the subband differential CQIs corresponding to each of the P sets of channel state information are arranged sequentially. The remaining KP sets of wideband CQIs and their corresponding all or part of the subband differential CQIs are also arranged sequentially in Part 2 CSI in the same manner. Refer to Figure 6 for the specific arrangement.

[0098] In some embodiments, K sets of broadband CQIs are arranged sequentially in Part 1 CSI, and all or part of the K sets of subband differential CQIs are arranged sequentially in Part 2 CSI. Refer to Figure 7 for the specific arrangement.

[0099] In some embodiments, P sets of broadband CQIs are arranged sequentially in Part 1 CSI, where P is an integer greater than zero and less than K. In Part 2 CSI, the remaining KP sets of broadband CQIs and all or part of the K sets of subband differential CQIs are arranged sequentially. The specific arrangement is shown in Figure 8.

[0100] In some embodiments, P sets of broadband CQIs are arranged sequentially in Part 1 CSI, where P is an integer greater than zero and less than K. In Part 2 CSI, all or part of the subband differential CQIs corresponding to the remaining P sets, the broadband CQIs of KP sets, and all or part of the subband differential CQIs corresponding to KP sets are arranged sequentially. Refer to Figure 9 for the specific arrangement.

[0101] It should be noted that when all broadband CQIs of all K sets of CSIs and all and / or some subband differential CQIs of each corresponding set are reported, the mapping and sorting method can be, but is not limited to, the above method, and the above multiple implementation methods can be used in combination.

[0102] It should be noted that the aforementioned K sets of subband differential CQI can be arranged in a partial-to-partial, a full-to-full, or mixed arrangement. For example, if there are two sets of CSI subband differential CQI, one set being a partial subband differential CQI and the other a full subband differential CQI, the partial and full subband differential CQIs can be mixed and arranged according to any of the mapping orders mentioned above. Similarly, if there are two sets of CSI subband differential CQI, one set being a partial subband differential CQI and the other also being a partial subband differential CQI, the partial subband differential CQIs from the first set and the partial subband differential CQIs from the second set can be arranged according to any of the mapping orders mentioned above.

[0103] Furthermore, the P sets selected from the K sets follow the combination number. That is, the index arrangement methods of P sets are: This is one of the situations.

[0104] 2. All broadband CQIs from all K sets of CSIs and all or part of the subband differential CQIs corresponding to some N sets of CSIs are reported, where N is an integer less than K. Processing CSI reports in this way reduces the load on the control channel, lowers terminal power consumption, and improves reporting efficiency. Furthermore, the complexity of processing and analyzing CSIs by the terminal and base station increases with the number of reported CQIs. Reducing the number of reported subband differential CQIs reduces system complexity and increases processing speed.

[0105] In some embodiments, in Part 1 CSI of a CSI report, the broadband CQIs of N sets of CSIs are arranged sequentially along with all or part of the subband differential CQIs, and then the remaining KN sets of broadband CQIs are arranged sequentially. See Figure 10 for the specific arrangement.

[0106] In some embodiments, in Part 1 CSI of a CSI report, the broadband CQIs of K sets of CSIs are arranged in order, and then the corresponding all / partial subband differential CQIs are arranged in order. Refer to Figure 11 for the specific arrangement.

[0107] In some embodiments, P sets of broadband CQIs and their corresponding all or part of the subband differential CQIs are placed in Part 1 CSI, where P is an integer greater than zero and less than or equal to N. The broadband CQIs of each CSI set are arranged sequentially along with their corresponding all or part of the subband differential CQIs. The remaining NP sets of broadband CQIs and their corresponding all / part of the subband differential CQIs are also arranged sequentially in the same manner. Then, KN sets of broadband CQIs are placed sequentially in Part 2 CSI. The specific arrangement is shown in Figure 12.

[0108] In some embodiments, P sets of broadband CQIs and their corresponding all or part of the subband differential CQIs are placed in Part 1 CSI, where P is an integer greater than zero and less than or equal to N. The broadband CQIs of each of the P sets of CSIs are arranged in order, and then the corresponding all / part of the subband differential CQIs of each set are arranged in order. The remaining NP sets of broadband CQIs and their corresponding all or part of the subband differential CQIs are also arranged in the same order. Then, KN sets of broadband CQIs are arranged in order and placed in Part 2 CSI. Refer to Figure 13 for the specific arrangement.

[0109] In some embodiments, P sets of broadband CQIs and their corresponding all or part of the subband differential CQIs are placed in Part 1 CSI, where P is an integer greater than zero and less than or equal to N. The broadband CQIs of each CSI in these P sets are arranged in order, and then the corresponding all or part of the subband differential CQIs of each set are arranged in order. The remaining KP sets of broadband CQIs and the corresponding all or part of the subband differential CQIs of the NP sets are arranged in order in Part 2 CSI. Refer to Figure 14 for the specific arrangement.

[0110] In some embodiments, K sets of broadband CQIs are arranged sequentially in Part 1 CSI, and N sets of all or part of the subband differential CQIs are arranged sequentially in Part 2 CSI. Refer to Figure 15 for the specific arrangement.

[0111] In some embodiments, P sets of broadband CQIs are arranged sequentially in Part 1 CSI, where P is an integer greater than zero and less than or equal to N. The remaining KP sets of broadband CQIs and N sets of all or part of the subband differential CQIs are arranged sequentially in Part 2 CSI. The specific arrangement is shown in Figure 16.

[0112] In some embodiments, P sets of broadband CQIs are arranged sequentially in Part 1 CSI, where P is an integer greater than zero and less than or equal to N. In Part 2 CSI, all or part of the subband differential CQIs corresponding to the P sets are arranged sequentially, along with the remaining NP sets of broadband CQIs, all or part of the subband differential CQIs of the NP sets, and the remaining KN sets of broadband CQIs. The specific arrangement is shown in Figure 17.

[0113] In some embodiments, P sets of broadband CQIs are arranged sequentially in Part 1 CSI, where P is an integer greater than zero and less than or equal to N. All or part of the subband differential CQIs corresponding to the P sets are arranged sequentially in Part 2 CSI, along with the remaining KP sets of broadband CQIs and all or part of the subband differential CQIs corresponding to the NP sets. The specific arrangement is shown in Figure 18.

[0114] 3. Broadband CQIs from some M sets of CSIs and all or part of the subband differential CQIs corresponding to K sets of CSIs are reported, where M is an integer less than K. This method of processing CSI reports optimizes data transmission, balances control channel load, terminal power consumption, and system performance, and provides a flexible and efficient CSI reporting mechanism, contributing to improved overall performance of wireless communication systems.

[0115] In some embodiments, in Part 1 CSI of a CSI report, the broadband CQIs of M sets of CSIs are sequentially arranged with the corresponding M sets of all or part of the subband differential CQIs, and then the KM sets of all or part of the subband differential CQIs are sequentially arranged. The specific arrangement is shown in Figure 19.

[0116] In some embodiments, in Part 1 CSI of a CSI report, the broadband CQIs of M sets of CSIs are arranged in sequence, and then all or part of the subband differential CQIs of K sets are arranged in sequence. Refer to Figure 20 for the specific arrangement.

[0117] In some embodiments, P sets of broadband CQIs and their corresponding all or part of the subband differential CQIs are placed in Part 1 CSI, where P is an integer greater than zero and less than or equal to M. The broadband CQIs of each CSI set are arranged sequentially along with their corresponding all or part of the subband differential CQIs. In Part 2 CSI, the remaining MP sets of broadband CQIs and their corresponding all or part of the subband differential CQIs are arranged sequentially in the same manner, and then the KM sets of all or part of the subband differential CQIs are arranged sequentially. Refer to Figure 21 for the specific arrangement.

[0118] In some embodiments, M sets of broadband CQIs and corresponding all or part of the subband differential CQIs are placed in Part 1 CSI, with the broadband CQIs of each CSI arranged sequentially along with all or part of the subband differential CQIs. KM sets of all or part of the subband differential CQIs are also arranged sequentially in Part 2 CSI in the same manner. See Figure 22 for the specific arrangement.

[0119] In some embodiments, M sets of broadband CQIs are arranged sequentially in Part 1 CSI, followed by all or part of the M sets of subband differential CQIs arranged sequentially. Similarly, KM sets of all or part of the subband differential CQIs are arranged sequentially in Part 2 CSI. See Figure 23 for the specific arrangement.

[0120] In some embodiments, P sets of broadband CQIs and their corresponding all or part of the subband differential CQIs are placed in Part 1 CSI, where P is an integer greater than zero and less than or equal to M. The broadband CQIs of each of the P sets of CSIs are arranged in order, and then the corresponding all or part of the subband differential CQIs of each set are arranged in order. In Part 2 CSI, the remaining MP sets of broadband CQIs and the corresponding all or part of the subband differential CQIs of KP sets are arranged in order. The specific arrangement is shown in Figure 24.

[0121] In some embodiments, M sets of broadband CQIs are arranged sequentially in Part 1 CSI, and K sets of all or part of the subband differential CQIs are arranged sequentially in Part 2 CSI. See Figure 25 for a specific arrangement.

[0122] In some embodiments, P sets of broadband CQIs are arranged sequentially in Part 1 CSI, where P is an integer greater than zero and less than or equal to M. The remaining MP sets of broadband CQIs and all or part of the K sets of subband differential CQIs are arranged sequentially in Part 2 CSI. The specific arrangement is shown in Figure 26.

[0123] In some embodiments, P sets of broadband CQIs are arranged sequentially in Part 1 CSI, where P is an integer greater than zero and less than or equal to M. In Part 2 CSI, all or part of the subband differential CQIs corresponding to the P sets are arranged sequentially, along with the remaining MP sets of broadband CQIs, all or part of the MP sets of subband differential CQIs, and all or part of the remaining KM sets of subband differential CQIs. The specific arrangement is shown in Figure 27.

[0124] 4. A portion of the M sets of CSI wideband CQIs and all or part of the corresponding M sets of subband differential CQIs are reported, where M is an integer less than K. By processing CSI reports in this way, the terminal can obtain more accurate channel state information, reducing retransmissions caused by base station errors in scheduling or transmission, thereby reducing latency. Reducing the number of reported wideband CQIs and subband differential CQIs can reduce the load on the control channel. This helps to utilize limited control channel resources more effectively and avoid channel congestion.

[0125] In some embodiments, in Part 1 CSI of a CSI report, the broadband CQIs of M CSIs are arranged sequentially along with all or part of the subband differential CQIs. See Figure 28 for the specific arrangement.

[0126] In some embodiments, in Part 1 CSI of a CSI report, the broadband CQIs of some M sets of CSIs are arranged sequentially, and then all or part of the subband differential CQIs of each set are arranged sequentially. The specific arrangement is shown in Figure 29.

[0127] In some embodiments, P sets of wideband CQIs and their corresponding all or part of the subband differential CQIs are placed in Part 1 CSI, where P is an integer greater than zero and less than or equal to M. The wideband CQIs of each CSI set are arranged sequentially along with their corresponding all or part of the subband differential CQIs. The remaining MP sets of wideband CQIs and their corresponding all or part of the subband differential CQIs are also arranged sequentially in Part 2 CSI in the same manner. Refer to Figure 30 for the specific arrangement.

[0128] In some embodiments, P sets of wideband CQIs and their corresponding all or part of the subband differential CQIs are placed in Part 1 CSI, where P is an integer greater than zero and less than or equal to M. The wideband CQIs of each of the P sets of CSIs are arranged in order, and then the corresponding all or part of the subband differential CQIs of each set are arranged in order. The remaining MP sets of wideband CQIs and their corresponding all or part of the subband differential CQIs are also arranged in Part 2 CSI in the same manner. Refer to Figure 31 for the specific arrangement.

[0129] In some embodiments, M sets of broadband CQIs are arranged sequentially in Part 1 CSI, and all or part of the M sets of subband differential CQIs are arranged sequentially in Part 2 CSI. The specific arrangement is shown in Figure 32.

[0130] In some embodiments, P sets of broadband CQIs are arranged sequentially in Part 1 CSI, where P is an integer greater than zero and less than or equal to M. In Part 2 CSI, the remaining MP sets of broadband CQIs and all or part of the M sets of subband differential CQIs are arranged sequentially. The specific arrangement is shown in Figure 33.

[0131] A portion of the broadband CQI from M sets of CSIs and all / partial subband differential CQIs from the corresponding N sets are reported, where M and N are integers less than K. By processing CSI reports in this way, the terminal may not need to measure all detailed broadband and subband CQI information; only a portion of the broadband and subband differential CQIs are reported. This reduces the number of reported broadband and subband differential CQIs, decreasing reporting overhead and lowering the load on the control channel. This helps to utilize limited control channel resources more effectively and avoid channel congestion.

[0132] When M > N, the embodiment of the arrangement method refers to the above point 2, that is, just replace K with M, and the present disclosure will not elaborate further.

[0133] When M < N, the embodiment of the arrangement method refers to the above point 3, that is, just replace K with N, and the present disclosure will not elaborate further.

[0134] When M = N, the embodiment of the arrangement method refers to the above point 4, that is, just replace N with M, and the present disclosure will not elaborate further.

[0135] It should be noted that the CQI content placed in Part 2 CSI can be further mapped to multiple groups in Part 2 CSI, such as Group0, Group1, Group2. The smaller the number of the group name, the higher the priority of the group. When the transmission resources are insufficient and part of the Part 2 CSI content needs to be discarded, part of the content can be discarded in the order of the group priorities from high to low.

[0136] Taking the mapping order in the Part 2 CSI report shown in Figure 21 as an example: The M-P set of broadband CQI can be mapped to Group0, all or part of the sub-band differential CQI corresponding to the M-P set is mapped to Group1, and all or part of the sub-band differential CQI corresponding to the remaining K-M sets is mapped to Group2. When the transmission resources are insufficient and part of the Part 2 CSI content needs to be discarded, all or part of the sub-band differential CQI corresponding to the K-M sets mapped to Group2 can be discarded first, then all or part of the sub-band differential CQI corresponding to the M-P sets mapped to Group1 can be discarded, and finally the M-P set of broadband CQI mapped to Group0 can be discarded.

[0137] In some embodiments, the first communication node processes the CSI report content of K sets in one CSI report, where K is an integer greater than zero. The first communication node can calculate and report M sets of CQI according to the following rules. It should be noted that CQI includes broadband CQI and sub-band CQI, where M is an integer greater than zero and less than or equal to K. The solution is as follows:

[0138] 1. When M equals 1, that is, it is necessary to calculate and report 1 set of CQI.

[0139] One embodiment is to calculate CQI based on the PMI in the first set of CSI in the CSI report. This CQI can be broadband CQI. When this CQI is broadband CQI, calculate the broadband CQI according to the broadband PMI. The specific calculation method refers to Figure 34.

[0140] One embodiment is to calculate CQI based on the PMI in the Kth set of CSI in the CSI report. This CQI can be broadband CQI. The specific calculation method refers to Figure 35.

[0141] One embodiment is to calculate the CQI based on the PMI from one or two sets of CSI reports in the middle of the CSI report. This CQI can be a broadband CQI. See Figure 36 for the specific calculation method.

[0142] When K is odd, based on the first number in the CSI report The PMI calculation in CSI uses a broadband CQI, where... This indicates that the integer part of the result should be rounded up.

[0143] When K is even

[0144] (1) The CQI is calculated based on the PMI in the K / 2 or K / 2+1 CSI report. The CQI can be a broadband CQI.

[0145] (2) Calculate two CQIs based on the PMIs in the K / 2 and K / 2+1 CSI reports respectively. The CQI can be a broadband CQI. Calculate the average of the two to obtain the final CQI that needs to be reported.

[0146] One embodiment is to calculate the CQI based on the PMI in the first set of CSI reports and / or the PMI in the Kth set of CSI reports. This CQI can be a broadband CQI.

[0147] (1) The reported CQI is obtained by averaging the two CQIs calculated based on the PMI in the first set of CSI and the PMI in the Kth set of CSI;

[0148] (2) Subtract the ΔCQI value from the CQI calculated based on the PMI in the first set of CSI to obtain the reported CQI;

[0149] (3) The CQI calculated based on the PMI in the Kth CSI is added to the ΔCQI value to obtain the reported CQI.

[0150] It should be noted that the ΔCQI value may be configured by the second communication node, or determined by the first communication node and reported to the second communication node, or a fixed value may be preset, including but not limited to the fixed value set in the protocol.

[0151] One embodiment is to calculate the CQI based on the PMI from all K CSI reports in the CSI report, and this CQI can be a broadband CQI:

[0152] (1) The reported CQI is obtained by averaging the values ​​of all K sets of CQI obtained from the calculation;

[0153] (2) The reported CQI is obtained by taking the weighted average of all K sets of CQI calculated;

[0154] It should be noted that the weighting coefficients can be configured by the second communication node, or determined by the first communication node and reported to the second communication node, or a fixed set of values ​​can be preset.

[0155] (3) Select the best CQI (e.g., the highest CQI value) from all K sets of CQIs obtained by calculation and report it;

[0156] (4) Based on all K sets of broadband CQIs obtained from the calculation, select the worst broadband CQI (e.g., the lowest CQI value) and report it;

[0157] (5) Based on all K sets of broadband CQIs calculated, the best broadband CQI is selected and ΔCQI value is subtracted to obtain the reported CQI;

[0158] (6) Based on all K sets of broadband CQIs calculated, the worst broadband CQI is selected and ΔCQI is added to obtain the reported CQI.

[0159] It should be noted that the ΔCQI value can be configured by the second communication node, or determined by the first communication node and reported to the second communication node, or a fixed value can be preset.

[0160] One embodiment is to calculate the CQI based on the PMI from all K CSI reports in the CSI report, and this CQI can be a broadband CQI:

[0161] (1) Calculate the mean and variance based on all K sets of CQI obtained, and report the mean and / or variance;

[0162] (2) Calculate the mean and standard deviation of all K broadband CQIs obtained from the calculation, and report the mean and / or standard deviation;

[0163] (3) Based on the calculated K sets of broadband CQI, divide them into G groups and calculate the mean and variance of each G set, and report the mean and / or variance and / or the corresponding location index of each G set;

[0164] (4) Based on the calculated K sets of broadband CQI, divide them into G groups, calculate the mean and standard deviation of each of the G groups, and report the mean and / or standard deviation of each of the G groups and the corresponding location index, where G is an integer greater than or equal to 1 and less than or equal to K. Therefore, we have Grouping methods.

[0165] It should be noted that the G value can be configured by the second communication node, or determined by the first communication node and reported to the second communication node, or a fixed value can be set.

[0166] 2. When M is greater than 1, that is, more than 1 CQI is calculated and reported. This CQI can be a broadband CQI.

[0167] One example is to calculate K sets of CQI based on the PMI in all K sets of CSI reports and then report them.

[0168] One embodiment involves calculating M sets of CQIs based on the PMIs in M ​​sets of CSIs in a CSI report and then reporting them. Each set of CQIs has a corresponding index, which indicates the location of the corresponding CQI. The index can be reported based on a bitmap or based on a binary index value; for specific methods, please refer to other embodiments in this disclosure.

[0169] Reporting M sets of CQI based on the PMI in M ​​sets of CSI reports can also include the following methods:

[0170] (1) Report the first M sets of CQIs and / or the corresponding indexes of the M sets of CQIs from the K indices. For example: when M equals 2, report the first and second sets of CQIs calculated based on the first and second sets of PMIs. Or when M equals 2, report the calculated first and second sets of CQIs and the corresponding indexes of the first and second sets.

[0171] (2) Report the last M sets of CQI from the K indices. For example: when M equals 2, report the CQI of the Kth set and the (K-1)th set based on the PMI of the Kth set and the (K-1)th set.

[0172] In this case, 1 bit can be used to indicate whether it is from the previous M sets or the subsequent M sets. In one embodiment, 0 indicates that the previous M sets of CQI are reported, and 1 indicates that the subsequent M sets of CQI are reported.

[0173] (3) Report the first M1 sets and the last M2 sets of CQI in K indices, where the sum of M1 and M2 is M, and M1 and M2 are integers greater than zero and less than K. The CQI can be a broadband CQI.

[0174] One embodiment is that these M sets of CQIs can be obtained and reported based on specific patterns. For example, M sets of CQIs can be generated at equal intervals.

[0175] a) When M1 is not equal to M2:

[0176] i. In one embodiment, when M is an odd number

[0177] ii. In one embodiment, when M is an odd number,

[0178] b) When M1 equals M2:

[0179] i. In one embodiment, when M is an even number, M1 = M2 = M / 2. For example: reporting the first set of broadband CQI and the Kth set of broadband CQI obtained from the calculation.

[0180] It should be noted that the values ​​of M1, M2, and M can be configured by the second communication node, or determined by the first communication node and reported to the second communication node, or a fixed value can be set.

[0181] (4) Report the best M sets of CQI obtained from the calculation. The best M sets of CQI can be arranged in descending order of CQI value and the first M CQI are selected.

[0182] (5) Report the worst M sets of CQI obtained from the calculation. The worst M sets of CQI can be arranged from low to high according to the size of the CQI value, and the first M CQI are taken.

[0183] (6) Report the best M1 set of CQI and the worst M2 set of CQI obtained from the calculation, where the sum of M1 and M2 is M, and M1 and M2 are integers greater than zero and less than K. The specific calculation method is as follows:

[0184] a) When M1 is not equal to M2:

[0185] i. In one embodiment, when M is an odd number

[0186] ii. In one embodiment, when M is an odd number,

[0187] b) When M1 equals M2:

[0188] i. In one embodiment, when M is an even number, M1 = M2 = M / 2, for example: reporting the best and worst broadband CQI obtained from the calculation.

[0189] One example is to calculate and report M sets of CQIs based on the PMIs in K sets of CSIs in the CSI report. These CQIs can be broadband CQIs, and the reporting method is as follows:

[0190] (1) After dividing the K sets of CSI into M groups, the calculated CQI of the M sets and / or the index of the corresponding M sets of CQI are reported.

[0191] a) In one embodiment, the calculated CQI from K sets is divided into M groups, totaling... There are several combination methods. When the number N of CQIs in each group is greater than 1, the average of the N CQIs in that group is taken, and thus the M sets of CQIs are reported.

[0192] b) In one embodiment, the calculated CQI from K sets is divided into M groups, totaling... There are several combination methods. When the number N of broadband CQIs in a group is greater than 1, the weighted average of the N broadband CQIs is taken to obtain the M sets of CQIs to be reported.

[0193] c) In one embodiment, K sets of CSI content are divided into M groups, totaling... There are several combination methods. A CQI is calculated based on N sets of PMIs within the group, that is, a CQI is calculated based on the weighted average of N sets of PMIs, and then the M sets of CQIs are reported.

[0194] It should be noted that the weighting coefficients can be configured by the second communication node, or determined by the first communication node and reported to the second communication node, or a fixed set of values ​​can be set.

[0195] (2) Report the M broadband CQIs that meet the threshold and / or the index of the corresponding M broadband CQIs.

[0196] a) In one embodiment, a threshold value TH_CQI for CQI is preset. Only broadband CQI values ​​greater than or equal to the threshold value are reported. For example, based on the PMI values ​​of four CSI reports, four broadband CQI values ​​are calculated as 6, 8, 10, and 12. If the threshold value TH_CQI for broadband CQI to be reported is preset to 9, then only the third and fourth sets meet the condition of being higher than the threshold value and are reported.

[0197] (b) In one embodiment, a pre-set threshold value TH_CQI for CQI is used. Only broadband CQI values ​​less than or equal to the threshold value are reported. For example, based on the PMI values ​​of four CSI reports, four broadband CQI values ​​are calculated as 6, 8, 10, and 12. If the pre-set threshold value TH_CQI for broadband CQI to be reported is 9, then only the first and second sets of CQI values ​​meet the condition of being below the threshold value and are reported.

[0198] c) In one embodiment, a threshold range for CQI is preset, namely TH_CQI1 to TH_CQI2, and only broadband CQI within the threshold range is reported.

[0199] d) In one embodiment, a threshold range for CQI is preset, namely TH_CQI1 to TH_CQI2, and only broadband CQI outside the threshold range is reported.

[0200] It should be noted that the threshold value can be configured by the second communication node, or determined by the first communication node and reported to the second communication node, or a fixed set of values ​​can be set.

[0201] In one specific embodiment, M broadband CQIs are calculated based on the PMIs in K CSIs in the CSI report and then reported:

[0202] (1) Calculate the mean and variance based on the calculated M broadband CQI, and report the mean and / or variance.

[0203] (2) Calculate the mean and standard deviation based on the calculated M broadband CQI, and report the mean and / or standard deviation.

[0204] (3) Based on the calculated M sets of broadband CQI, divide them into G groups and calculate the mean and variance of each of the G sets, and report the mean and / or variance of the G sets and the corresponding location index.

[0205] (4) Based on the calculated M broadband CQI values, divide the data into G groups and calculate the mean and standard deviation for each of the G groups. Report the mean and / or standard deviation of each of the G groups and the corresponding location index (where 1 ≤ G ≤ M, therefore...). (Grouping methods).

[0206] It should be noted that the G value can be configured by the second communication node, or determined by the first communication node and reported to the second communication node, or a fixed value can be set.

[0207] In some embodiments, the first communication node reports broadband CQI, and the reporting method and content are as follows:

[0208] 1. The first communication node reports the absolute value of M' sets of broadband CQIs and / or the indices of corresponding multiple sets of CQIs (where 0... <M′≤K)。

[0209] In one embodiment, when M' = K, the CQI value is dynamically quantized and reported, meaning the number of quantized bits is associated with the CQI value.

[0210] For example: Based on the PMI calculations in the four CSI reports, four broadband CQIs are obtained, with values ​​of 6, 8, 10, and 12 respectively. If all four broadband CQIs are reported, corresponding to quantization results of 110, 1000, 1010, and 1100 respectively, then these four broadband CQIs (110100010101100) should be reported in order, without needing to report the corresponding indexes.

[0211] In one embodiment, when M' = K, the CQI value is fixed-quantized and reported; that is, each CQI value is quantized using a fixed number of bits. If the quantization precision is insufficient, zero-padding is performed.

[0212] For example: Four sets of wideband CQI are calculated based on the PMI in 4 sets of CSI in the CSI report, and the values are 6, 8, 10, and 12 respectively. Now, all four sets of wideband CQI are reported, and each wideband CQI value is quantized with 4 bits, that is, the corresponding quantization results are 0110, 1000, 1010, and 1100 respectively. Then, the four sets of wideband CQI, namely 0110100010101100, are reported in sequence.

[0213] In one embodiment, when M' < K, report the dynamic M' sets of quantized CQI values and / or the corresponding indices.

[0214] In one embodiment, first arrange the index numbers of the CQI to be reported in sequence and then arrange the corresponding CQI values in sequence. The specific arrangement method is shown in Table 1 below.

[0215] Table 1

[0216] For example: Four sets of wideband CQI are calculated based on the PMI in 4 sets of CSI in the CSI report, and the values are 6, 10, 9, and 12 respectively. Assume that the wideband CQI satisfying the condition CQI > 9 is reported, that is, the second set and the fourth set.

[0217] In one embodiment, the reported CQI index is represented by binary bit quantization, that is, the quantization bit number B is associated with K, that is The corresponding binary indices are 01 and 11 respectively; the corresponding CQI quantization results are 1010 and 1100 respectively. Then, these two sets of wideband CQI are reported in the order shown in Table 2 below (that is, 011110101100).

[0218] Table 2

[0219] In one embodiment, the reported CQI index is represented by a bitmap, that is, K bits correspond to the indices of K sets of CSI one by one, and the corresponding bit is represented by 1 to indicate that the CQI of this index needs to be fed back. It can be, but is not limited to, the corresponding binary index sequence arranged as 0101; the corresponding CQI quantization results are 1010 and 1100 respectively. Then, these two sets of wideband CQI are reported in the order shown in Table 3 below (that is, 010110101100). It should be noted that the method of reporting CQI indices using a bitmap can be applied to all cases of reporting CQI indices.

[0220] Table 3

[0221] In one embodiment, arrange the index numbers of each set of CQI to be reported and the corresponding CQI values in sequence. Refer to Table 4 below.

[0222] Table 4

[0223] For example: Based on the PMI in the four CSI reports, four broadband CQIs are calculated, with values ​​of 6, 10, 9, and 12 respectively. Assume that the broadband CQIs that meet the condition of CQI>9 are reported, namely the second and fourth sets.

[0224] In one embodiment, the reported CQI index uses binary bit quantization, meaning the number of quantized bits B is associated with K. The corresponding binary indices are 01 and 11 respectively; the corresponding CQI quantization results are 1010 and 1100. So, these two sets of broadband CQI are reported in the order shown in Table 5 below (i.e., 011010111100).

[0225] Table 5

[0226] In one embodiment, the index permutations and combinations can be numbered and quantized, and the first communication node reports the index quantization results corresponding to M' sets of broadband CQI.

[0227] For example: Based on the PMI values ​​from four CSI reports, four broadband CQIs are calculated, with values ​​of 6, 10, 9, and 12 respectively. Assume that the broadband CQIs that meet the condition of CQI > 9 are the second and fourth sets. A rule can be pre-defined, that is, the permutations and combinations of the four CQIs and the corresponding quantization methods can be, but are not limited to, those shown in Table 6 below:

[0228] Table 6

[0229] In one embodiment, the reported CQI index is represented by binary bit quantization using the rules in the table above, that is, the number of quantized bits B is associated with the total number of permutations and combinations S, i.e. The corresponding binary index is 100; the corresponding CQI quantization results are 1010 and 1100, respectively. The two sets of broadband CQI are reported in the order shown in Table 7 below (i.e., 10010101100).

[0230] Table 7

[0231] In one embodiment, when reporting M' consecutive sets of CQIs, the values ​​of M' to be reported, the offset value of the starting position of the first set of CQI in the M' sets of CQIs, and the corresponding CQI values ​​of each set are arranged sequentially. The specific arrangement is shown in Table 8 below.

[0232] Table 8

[0233] It should be noted that the reported value of M', the index offset value of the starting position of M' set CQI, and the corresponding set of CQI values ​​can be, but are not limited to, combinations in the table above, and all permutations and combinations are acceptable.

[0234] For example: Based on the PMI in the four CSI reports, four broadband CQIs are calculated, with values ​​of 6, 10, 10, and 12 respectively. Assume that the broadband CQIs that meet the condition of CQI>9 are the 2nd, 3rd, and 4th consecutive sets.

[0235] In one embodiment, the reported CQI sequence start position index offset value is represented by binary bit quantization, that is, the number of quantized bits B is associated with K or M', i.e. or The corresponding binary indices are 0 and 1 respectively; the corresponding 3 sets of CQI quantization results are 1010, 1010, and 1100. Then, these three sets of broadband CQI are reported in the order shown in Table 9 below (i.e., 1101101010101100).

[0236] Table 9

[0237] In one embodiment, when reporting M' consecutive sets of CQIs, the index offset value of the starting position of the first set of CQIs in the M' sets of CQIs to be reported, the index offset value of the position of the last set (i.e., the M'th set) of CQIs in the M' sets of CQIs, and the corresponding CQI value of each set are arranged sequentially. The specific arrangement is shown in Table 10 below.

[0238] Table 10

[0239] It should be noted that the index offset value of the starting position of the M' sets of CQI, the index offset value of the last set (i.e. the M'th set) of CQI in the M' sets of CQI, and the corresponding CQI value of each set can be, but is not limited to, the combination in the table above. All permutations and combinations are acceptable.

[0240] For example: Based on the PMI in the four CSI reports, four broadband CQIs are calculated, with values ​​of 6, 10, 10, and 12 respectively. Assume that the broadband CQIs that meet the condition of CQI>9 are the 2nd, 3rd, and 4th consecutive sets.

[0241] In one embodiment, the reported CQI sequence start position index offset and the reported CQI sequence end position index offset are represented by binary bit quantization, that is, the number of quantization bits B is associated with K, i.e. The corresponding binary indices are 01 and 11; the corresponding quantization results of the three sets of CQI are 1010, 1010, and 1100. These three sets of broadband CQI are reported in the order shown in Table 11 below (i.e., 0111101010101100).

[0242] Table 11

[0243] In one embodiment, referring to Table 12 below, when reporting M' consecutive sets of CQI and the starting position index is 1 (i.e. the starting position is the first set of CQI), the values ​​of M' to be reported and the corresponding CQI values ​​of each set are arranged in order.

[0244] Table 12

[0245] It should be noted that the reported M' value and the corresponding set of CQI values ​​can be, but are not limited to, the combinations in the table above, and all permutations and combinations are acceptable.

[0246] For example: Based on the PMI in the four CSI reports, four broadband CQIs are calculated, with values ​​of 10, 12, 11, and 8 respectively. Assume that the broadband CQIs that meet the condition of CQI>9 are reported, namely the first, second, and third consecutive sets.

[0247] In one embodiment, the reported CQI sequence length M' is represented by binary bit quantization, meaning the number of quantized bits B is associated with either K or M'. or The corresponding binary M' value is 11; the corresponding 3 sets of CQI quantization results are 1010, 1100, and 1011. Then, these three sets of broadband CQI are reported in the order shown in Table 13 below (i.e., 11101011001011).

[0248] Table 13

[0249] It should be noted that when B is associated with K, there may be an extra bit compared to when B is associated with M' (because K > M'). This can be solved by padding the binary number with zeros.

[0250] In one embodiment, when M' consecutive sets of CQIs are reported and the starting position index is 1 (i.e., the starting position is the first set of CQIs), the index offset value of the last set (i.e., the M'th set) of CQIs and the corresponding CQI value of each set are arranged sequentially. The specific arrangement method is shown in Table 14 below.

[0251] Table 14

[0252] It should be noted that the index offset value of the last set (i.e., the M'th set) of CQI in the reported M' sets of CQI and the corresponding CQI value of each set can be, but is not limited to, the combination in the table above, and all permutations and combinations are acceptable.

[0253] For example: Based on the PMI in the four CSI reports, four broadband CQIs are calculated, with values ​​of 10, 12, 11, and 8 respectively. Assume that the broadband CQIs that meet the condition of CQI>9 are reported, namely the first, second, and third consecutive sets.

[0254] In one embodiment, the reported CQI sequence termination position index offset value is represented by binary bit quantization, that is, the number of quantized bits B is associated with K or M', i.e. or The corresponding binary index is 10; the corresponding three sets of CQI quantization results are 1010, 1100, and 1011. These three sets of broadband CQI are reported in the order shown in Table 15 below (i.e., 10101011001011).

[0255] Table 15

[0256] 2. The first communication node differentially reports M' sets of broadband CQIs and / or the indices of multiple corresponding CQIs (where 0... <M′≤K)。

[0257] In one embodiment, when M' = K, the lowest CQI value is used as a reference value, and its absolute value is quantized and / or its corresponding index value is reported (when the first set of CQI values ​​is the lowest, the index value can be left unreported by default). Then, the remaining M'-1 CQIs are dynamically differentially quantized based on the reference value and reported together, i.e., the difference values ​​are all positive, and the number of quantized bits is associated with the difference in CQIs; or, the remaining M'-1 CQIs are fixed differentially quantized based on the reference value and reported together, i.e., the difference values ​​are all positive, and the number of quantized bits is associated with the maximum difference in CQIs (i.e., ...). For example, ΔCQI max =15, meaning B is a fixed 4 bits). For specific arrangement, please refer to Table 16 below.

[0258] Table 16

[0259] For example: Based on the PMI calculations in the four CSI reports, four broadband CQIs are obtained, with values ​​of 8, 7, 10, and 12 respectively. Now, all four broadband CQIs are reported. The second broadband CQI corresponding to the minimum value of 7 is taken as the reference value, and its absolute value is quantized to 0111 (using a 4-bit fixed quantization method). Then, the differences between the other three broadband CQIs and the reference value are 1, 3, and 5 respectively. If a fixed 3-bit differential quantization method is used, the corresponding quantization results are 001, 011, and 101. Then, the four broadband CQIs of 010111001011101 are reported in the order of Table 17.

[0260] Table 17

[0261] In one embodiment, when M' = K, the highest CQI value is used as the reference value, and its absolute value is quantized and / or its corresponding index value is reported (when the first set of CQI values ​​is the highest, the index value can be omitted by default). Then, the remaining M'-1 CQIs are dynamically differentially quantized based on the reference value and reported together, i.e., the difference values ​​are all negative, and the number of quantized bits is associated with the difference in CQIs; or, the remaining M'-1 CQIs are fixed differentially quantized based on the reference value and reported together, i.e., the difference values ​​are all negative, and the number of quantized bits is associated with the maximum difference in CQIs (i.e., ...). For example, ΔCQI max =15, meaning B is a fixed 4 bits). It should be noted that since all difference values ​​are negative, only their opposites (the positive part) need to be reported; the sign information does not need to be reported. Furthermore, in some other embodiments, sign information can also be reported. In this case, the sign information and the corresponding specific value will be reported together. See Table 18 below for the specific arrangement.

[0262] Table 18

[0263] For example: Based on the PMI calculations in the four CSI reports, four broadband CQIs are obtained, with values ​​of 8, 7, 10, and 12 respectively. Now, all four broadband CQIs are reported. The fourth broadband CQI, corresponding to the maximum value of 12, is taken as the reference value, and its absolute value is quantized as 1100. Then, the differences between the other three broadband CQIs and the reference value are -4, -5, and -2 respectively. If a fixed 3-bit differential quantization method is used, the quantization results of the positive part of the corresponding difference are 100, 101, and 010. Then, the four broadband CQIs of 111100100101010 are reported in the order of Table 19.

[0264] Table 19

[0265] In one embodiment, when M' = K, a specific set of CQI values is taken as a reference value (which can be but is not limited to the first set, the last set, a middle set, etc.), and its absolute value is quantized and / or the corresponding index value is reported (when the first set of CQI is selected as the reference value, the index value may not be reported by default). Then, the remaining M' - 1 CQIs are dynamically differentially quantized based on the reference value and reported together, and the number of quantization bits is associated with the difference of the CQIs; or, the remaining M' - 1 CQIs are fixed differentially quantized based on the reference value and reported together, and the number of quantization bits is associated with the maximum difference of the CQIs (i.e., e.g., ΔCQI max = 15, i.e., B is fixed at 4 bits). It should be noted that: the selected reference value is not necessarily the highest / lowest value, so the difference values can be positive or negative. Therefore, an additional bit is required to represent the sign bit of the difference value, i.e., 0 / 1 represents positive / negative. The specific arrangement is shown in Table 20 below.

[0266] Table 20

[0267] For example: Based on the PMI in 4 sets of CSI in the CSI report, 4 sets of wideband CQIs are calculated, with values of 7, 10, 12, and 8 respectively. Now all 4 sets of wideband CQIs are reported. The 4th set of wideband CQI is taken as the reference value, and the absolute value is quantized to 1000. Then the differences of the other 3 sets of wideband CQIs relative to the reference value are -1, 2, and 4 respectively. If the fixed 4-bit differential quantization method (1 bit for the sign bit (0 / 1 represents positive / negative) + 3 bits for the absolute value) is used, the quantization results of the corresponding differences are 1001, 0010, and 0100 respectively. Then the four sets of wideband CQIs 111000100100100100 are reported in the order of Table 21 below.

[0268] Table 21

[0269] In one embodiment, when M' = K, the average value of the CQI values of M'' sets of CQIs among the M' sets of CQIs is taken as the reference value, and its absolute value is quantized and reported (where 1 < M″ ≤ K is an integer, that is, it can be but is not limited to taking the average of all K sets of CQI values, taking the average of some M'' sets of CQIs, for example: taking the average of the first set and the last Kth set of CQI values, taking the average of the best set and the worst set of CQI values, etc.). Among them, all M' CQIs are dynamically differentially quantized based on the reference value and reported together, and the number of quantization bits is associated with the difference of the CQIs; or, all M' CQIs are fixed differentially quantized based on the reference value and reported together, and the number of quantization bits is associated with the maximum difference of the CQIs (i.e., e.g., ΔCQI max = 15, i.e., B is fixed at 4 bits). The specific arrangement is shown in Table 22 below.

[0270] Table 22

[0271] For example: Four sets of wideband CQIs are calculated based on the PMIs in 4 sets of CSIs in the CSI report, and the values are 8, 6, 10, and 12 respectively. Now, all 4 sets of wideband CQIs are reported, and the average value 9 of these 4 sets of wideband CQIs is used as the reference value, which is quantized to 1001 in absolute value. Then, the differences of these 4 sets of wideband CQIs relative to the reference value are -1, -3, 1, and 3 respectively. If the fixed 4-bit differential quantization method (1-bit sign bit (0 / 1 represents positive / negative) + 3-bit absolute value) is used, the quantization results of the corresponding differences are 1001, 1011, 0001, and 0011 respectively. Then, the four sets of wideband CQIs 10011001101100010011 are reported in the order of Table 23 below.

[0272] Table 23

[0273] In one embodiment, when M'<K, the lowest or highest CQI value reported is used as the reference value (which can be but is not limited to the lowest or highest CQI value among the M' sets of CQIs that meet a certain threshold condition), and its absolute value is quantized and / or the corresponding index value is reported (when the first set of CQI is selected as the reference value, the index value can be defaulted not to be reported). Then, the remaining M'-1 CQIs are reported together with their dynamic differential quantization and position indexes based on the reference value, and the quantization bit number is associated with the difference of the CQIs; or, the remaining M'-1 CQIs are reported together with their fixed differential quantization and position indexes based on the reference value, and the quantization bit number is associated with the maximum difference of the CQIs. The specific arrangement method is referred to Table 24 or Table 25 below.

[0274] Table 24<00006​​​​​​​​​​​

[0278] In one embodiment, when M' < K, a set of reported CQI values is used as a reference value (which can be, but is not limited to, the first set of CQI, the last set of CQI, etc. among the M' sets of CQI that meet a certain threshold condition), and its absolute value is quantized and / or the corresponding index value is reported (when the first set of CQI is selected as the reference value, the index value may not be reported by default). Then, the remaining M' - 1 CQIs are reported together with their dynamic differential quantization and position indices based on the reference value, and the number of quantization bits is associated with the difference of the CQIs; or, the remaining M' - 1 CQIs are reported together with their fixed differential quantization and position indices based on the reference value, and the number of quantization bits is associated with the maximum difference of the CQIs. The specific arrangement is shown in Table 27 or Table 28 below.

[0279] Table 27

[0280] Table 28

[0281] For example: Four sets of wideband CQIs are calculated based on the PMI in 4 sets of CSI in the CSI report, and the values are 8, 11, 10, and 12 respectively. Now, it is required to report 3 sets of wideband CQIs with a threshold wideband CQI > 9. The first set of wideband CQI value 11 (i.e., the 2nd set of wideband CQI) that meets the condition is used as the reference value, and its absolute value is quantized to 1011 (using a 4-bit fixed quantization method). Then, the differences of the other two sets of wideband CQIs relative to the reference value are -1 and 1 respectively. If a fixed 3-bit differential quantization method (1-bit sign bit (0 / 1 represents positive / negative) + 2-bit positive part of the difference value) is used, the corresponding quantization results are 101 and 001 respectively. Then, the three sets of wideband CQIs 0110111010111001 are reported in the order of Table 29 below.

[0282] Table 29

[0283] In one embodiment, when M' < K, the average value of the CQI values of M" sets in the M' sets of CQIs is used as a reference value, and its absolute value is quantized and reported (where M" is an integer satisfying 1 < M" ≤ K, that is, it is possible but not limited to taking the average of all K sets of CQI values, taking the average of the reported M' sets of CQI values, taking the average of some M" sets of CQIs, for example: taking the average of the first set and the last Kth set of CQI values, taking the average of the best set and the worst set of CQI values, etc.), and its absolute value is quantized and reported. Among them, all M' sets of CQIs are reported together with the dynamic differential quantization based on the reference value and its position index, and the number of quantization bits is associated with the difference of the CQIs; or, all M' sets of CQIs are reported together with the fixed differential quantization based on the reference value and its position index, and the number of quantization bits is associated with the maximum difference of the CQIs. The specific arrangement is referred to Table 30 or Table 31 or Table 32 shown below.

[0284] Table 30

[0285] Table 31

[0286] Table 32

[0287] For example: Four sets of wideband CQIs are calculated based on the PMIs in 4 sets of CSIs in the CSI report, and the values are 8, 12, 10, 8 respectively. Now, it is required to report two sets of wideband CQIs with the threshold wideband CQI > 9. The average value 11 of these two sets of wideband CQI values that meet the conditions is used as the reference value, and the absolute value is quantized to 1011 (using a 4-bit fixed quantization method). Then the differences between these two sets of wideband CQIs and the reference value are 1 and -1 respectively. If a fixed 3-bit differential quantization method is used (1-bit sign bit (0 / indicating positive / negative) + 2-bit positive part of the difference value), the corresponding quantization results are 001 and 101 respectively. Then report these two sets of wideband CQIs of 10110100110101 in the order of Table 33 below.

[0288] Table

[0289] In one embodiment, when M'<K, a preset threshold T is used as a reference value, and its absolute value is quantized and reported (that is, it can be but is not limited to being configured by the second communication node, or determined by the first communication node and reported to the second communication node, or a fixed value is set). Among them, all M' sets of CQI are reported together with the dynamic differential quantization based on the reference value and their position indexes, and the number of quantization bits is associated with the difference of CQI; or, all M' sets of CQI are reported together with the fixed differential quantization based on the reference value and their position indexes, and the number of quantization bits is associated with the maximum difference of CQI. The specific arrangement is shown in Table 34 or Table 35 or Table 36 below.

[0290] Table 34

[0291] Table 35

[0292] Table 36

[0293] For example: Four sets of wideband CQI are calculated based on the PMI in the 4 sets of CSI in the CSI report, and the values are 5, 10, 8, and 13 respectively. Now, 2 sets of wideband CQI with the threshold wideband CQI>9 need to be reported. That is, the threshold value T = 9 is used as the reference value, and the absolute value is quantized as 1001 (using a 4-bit fixed quantization method). Then the differences between these two sets of wideband CQI and the reference value are 1 and 4 respectively. If a fixed 3-bit differential quantization method is used, the corresponding quantization results are 001 and 100 respectively. Then these two sets of wideband CQI, 10010100111100, are reported in the order of Table 37 below.

[0294] Table 37

[0295] It should be noted that when reporting consecutive M' sets of CQI, the reporting can be referred to and combined with the embodiments introduced above. For example: The indexes of the start and end positions of M' sets of CQI are used to replace the indexes of each set of CQI for representation.

[0296] In one embodiment, when M' < K, a certain set of CQI values in the reported M' sets is used as a reference value (which can be, but is not limited to, the best CQI, the worst CQI, the first set of CQI, the last set of CQI, the middle set of CQI, etc. among the M' sets of CQI that meet a certain threshold condition). Its absolute value is quantized and / or the corresponding index value is reported (when the first set of CQI is selected as the reference value, the index value may not be reported by default). Then, the remaining M' - 1 CQIs are reported together with their dynamic differential quantization based on the reference value and their position indices, and the number of quantization bits is associated with the difference of the CQIs; or, the remaining M' - 1 CQIs are reported together with their fixed differential quantization based on the reference value and their position indices, and the number of quantization bits is associated with the maximum difference of the CQIs. Among them, the position index is reported in the form of a bitmap. It should be noted that, but is not limited to, when the first set of CQI in M' is selected as the reference value, the position index of the reference CQI may not be reported. The specific arrangement is shown in Table 38 below.

[0297] Table 38

[0298] For example: Four sets of wideband CQIs are calculated based on the PMI in 4 sets of CSI in the CSI report, and the values are 8, 11, 10, and 12 respectively. Now, it is required to report 3 sets of wideband CQIs with the threshold wideband CQI > 9. The lowest CQI value 10 (i.e., the 3rd set of wideband CQI) that meets the condition is used as the reference value, and the absolute value is quantized to 1010 (using a 4-bit fixed quantization method). Then, the differences of the other two sets of wideband CQIs relative to the reference value are 1 and 2 respectively. If a fixed 3-bit differential quantization method is used, the corresponding quantization results are 001 and 010 respectively. Then, the three sets of wideband CQIs 0111101010001010 are reported in the order of Table 39 below.

[0299] Table 39

[0300] For example: Four sets of wideband CQIs are calculated based on the PMI in 4 sets of CSI in the CSI report, and the values are 8, 11, 10, and 12 respectively. Now, it is required to report 3 sets of wideband CQIs with the threshold wideband CQI > 9. The first set of wideband CQI value 11 (i.e., the 2nd set of wideband CQI) that meets the condition is used as the reference value, and the absolute value is quantized to 1011 (using a 4-bit fixed quantization method). Then, the differences of the other two sets of wideband CQIs relative to the reference value are -1 and 1 respectively. If a fixed 3-bit differential quantization method (1-bit sign bit (0 / 1 represents positive / negative) + 2-bit positive part of the difference value) is used, the corresponding quantization results are 101 and 001 respectively. Then, the three sets of wideband CQIs 0111011�11101001 are reported in the order of Table 40 below.

[0301] Table 40

[0302] In one embodiment, when M’ < K, the average value of the CQI values of M” sets in the M’ sets of CQIs is used as a reference value, and its absolute value is quantized and reported (where M” is an integer satisfying 1 < M” ≤ K, that is, it can be but is not limited to taking the average of all K sets of CQI values, taking the average of the reported M’ sets of CQI values, taking the average of some M” sets of CQIs, for example: taking the average of the first set and the last Kth set of CQI values, taking the average of the best set and the worst set of CQI values, etc.), and its absolute value is quantized and reported. Among them, all M’ CQIs are reported together with their dynamic differential quantization based on the reference value and their position indexes, and the number of quantization bits is associated with the difference of the CQIs; or, all M’ CQIs are reported together with their fixed differential quantization based on the reference value and their position indexes, and the number of quantization bits is associated with the maximum difference of the CQIs. Among them, the position index is reported in the form of a bitmap. The specific arrangement is shown in Table 41 below.

[0303] Table 41

[0304] For example: Four sets of wideband CQIs are calculated based on the PMIs in 4 sets of CSIs in the CSI report, and the values are 8, 11, 10, and 12 respectively. Now, it is necessary to report 3 sets of wideband CQIs with the threshold wideband CQI > 9. The average value 11 of the three sets of wideband CQIs that meet the conditions is used as the reference value, and the absolute value is quantized to 1011 (using a 4-bit fixed quantization method). Then, the differences of these three sets of wideband CQIs relative to the reference value are 0, -1, and 1 respectively. If a fixed 3-bit differential quantization method (1-bit sign bit (0 / 1 represents positive / negative) + 2-bit positive part of the difference value) is used, the corresponding quantization results are 000, 101, and 001 respectively. Then, the three sets of wideband CQIs 01111011000101001 are reported in the order shown in Table 42 below.

[0305] Table 42

[0306] In one embodiment, when M’ < K, a preset threshold T is used as a reference value, and its absolute value is quantized and reported (that is, it can be but is not limited to being configured by the second communication node, or determined by the first communication node and reported to the second communication node, or setting a fixed value). Among them, all M’ CQIs are reported together with their dynamic differential quantization based on the reference value and their position indexes, and the number of quantization bits is associated with the difference of the CQIs; or, all M’ CQIs are reported together with their fixed differential quantization based on the reference value and their position indexes, and the number of quantization bits is associated with the maximum difference of the CQIs. Among them, the position index is reported in the form of a bitmap. The specific arrangement is shown in Table 43 below.

[0307] Table 43

[0308] For example: Based on the PMI calculations from the four CSI reports, four broadband CQIs are obtained, with values ​​of 5, 9, 10, and 12 respectively. Now, the three broadband CQIs with a threshold threshold > 8 need to be reported, i.e., the threshold threshold T = 8 is used as the reference value, and the absolute value is quantized to 1000 (using a 4-bit fixed quantization method). Then, the differences between these three broadband CQIs and the reference value are 1, 2, and 4 respectively. If a fixed 3-bit differential quantization method is used, the corresponding quantization results are 001, 010, and 100 respectively. Then, the three broadband CQIs 01111000001010100 are reported in the order of Table 44.

[0309] Table 44

[0310] In some embodiments, the first communication node calculates and reports the subband differential CQI based on N sets of broadband CQI, where N is an integer 1 ≤ N ≤ K. The calculation and reporting method is as follows:

[0311] 1. Calculate N sets of subband differential CQI based on N sets of broadband CQI. Each set of subband differential CQI is calculated based on the broadband CQI differential calculation of the corresponding index. Each set of subband differential CQI includes S subband differential CQI values, which are related to the number of subbands and / or the number of subband groups.

[0312] In one embodiment, when N=1, a set of corresponding subband differential CQIs is calculated based on a set of broadband CQIs. The set of subband differential CQIs includes S subband differential CQI values. Each subband differential CQI value may, but is not limited to, have fixed X-bit quantization or dynamic quantization, wherein each subband / subband group has the same size.

[0313] It should be noted that the size of a subband can be, but is not limited to, the number of frequency domain units it contains. Frequency domain units can be, but are not limited to, physical resource blocks (PRBs), physical resource block groups (RBGs), subcarriers, subcarrier groups, resource units (REs), and resource unit groups (REGs).

[0314] For example: A wideband CQI value of 8 is used with a 4-bit fixed quantization method of 1000. The corresponding subband CQI of this wideband CQI contains 4 subband CQIs (a total of 16 PRBs, each subband contains 4 PRBs, for a total of 4 subbands). The CQI values ​​of each subband are 8, 7, 9, and 6, and the corresponding differential CQI values ​​are 0, -1, 1, and -2. If the differential value is quantized with a fixed X = 2 bits according to the rules in Table 45 below, the corresponding quantization results are 00, 11, 01, and 11.

[0315] Table 45

[0316] Therefore, the specific quantization results of this broadband CQI and its corresponding sub-band differential CQI are shown in Table 46 below:

[0317] Table 46

[0318] In one embodiment, when N=1, a set of corresponding subband differential CQIs is calculated based on a set of broadband CQIs. The set of subband differential CQIs includes S subband differential CQI values. Each subband differential CQI value may, but is not limited to, have fixed X-bit quantization or dynamic quantization, wherein the size of each subband / subband group is different.

[0319] For example, consider a wideband CQI with a value of 8, using a 4-bit fixed quantization method to achieve 1000. This wideband CQI corresponds to a set of sub-band CQIs containing 3 sub-bands (a total of 16 PRBs; one sub-band contains 8 PRBs, and the other two sub-bands each contain 4 PRBs, for a total of 3 sub-bands). Each sub-band has a CQI value of 8, 7, or 9, and corresponding differential CQI values ​​of 0, -1, or 1. If the differential value is quantized using a fixed X = 2 bits according to the rules in Table 45 above, the corresponding quantization results are 00, 11, and 01. Therefore, the specific quantization results of this wideband CQI and its corresponding set of sub-band differential CQIs are shown in Table 47 below:

[0320] Table 47

[0321] For example, consider a wideband CQI value of 8, using a 4-bit fixed quantization method of 1000. This wideband CQI corresponds to a set of sub-band CQIs containing four sub-band CQIs (a total of 16 PRBs, each sub-band containing four PRBs, for a total of four sub-bands). The CQI values ​​of each sub-band are 8, 7, 9, and 10. If these four sub-bands are further divided into two sub-band groups (the first three sets of sub-bands form one sub-band group, and the fourth set forms another), then the average CQI value of the first sub-band group is 8, and the CQI value of the second sub-band group is 10. The corresponding differential CQI values ​​are 0 and 2. If a fixed X = 2 bits is used to quantize the differential value according to the rules in Table 45 above, the corresponding quantization results are 00 and 10. Therefore, the specific quantization results of this wideband CQI and its corresponding set of sub-band differential CQIs are shown in Table 48 below:

[0322] Table 48

[0323] It should be noted that the size of a subband can be, but is not limited to, the number of frequency domain units it contains. The number of frequency domain units contained in a subband or the grouping method of subband groups can be, but is not limited to, a set of rules negotiated between the first communication node and the second communication node, configuration of the second communication node to the first communication node, the first communication node reporting the size of the subband to the second communication node, default configuration, etc.

[0324] 2. Calculate N sets of subband differential CQI based on N sets of broadband CQI. Each set of subband differential CQI is calculated based on the broadband CQI differential calculation of the corresponding index. The subband differential CQI in the N sets includes {S1,S2,…,SN} subband differential CQI values, which are related to the number of subbands and / or the number of subband groups.

[0325] In one embodiment, when N>1, N sets of corresponding subband differential CQIs are calculated based on N sets of broadband CQI differentials. These N sets of subband differential CQIs include {S1, S2, ..., SN} subband differential CQI values. Each subband differential CQI value can be, but is not limited to, quantized by a fixed X bits or dynamically quantized. The number of subband differential CQIs is the same in each set, i.e., S1 = S2 = ... = SN. The specific arrangement is shown in Table 49 below.

[0326] Table 49

[0327] In one embodiment, when N>1, N sets of corresponding subband differential CQIs are calculated based on N sets of broadband CQIs. The N sets of subband differential CQIs include {S1,S2,…,SN} subband differential CQI values. Each subband differential CQI value can be quantized by, but is not limited to, a fixed X bits or dynamic quantization. The number of subband differential CQIs in each set can be different.

[0328] For example, there are two sets of wideband CQI values, 8 and 10 respectively. Using the 4-bit fixed quantization method, they are 1000 and 1010 respectively. The two sets of sub-band CQIs corresponding to these two sets of wideband CQIs respectively contain 3 sub-band differential CQIs and 4 sub-band differential CQIs. Among them, the CQI values of the 3 sub-bands included in the first set are 8, 7, 9, and the corresponding differential CQI values are 0, -1, 1; the CQI values of the 4 sub-bands included in the second set are 10, 11, 9, 10, and the corresponding differential CQI values are 0, 1, -1, 0; if the fixed X = 2-bit quantization of the differential values is adopted according to the rules in Table 45 above, the corresponding two sets of quantization results are 00, 11, 01 and 00, 01, 11, 00 respectively. Therefore, the specific quantization results of these two sets of wideband CQIs and their corresponding sub-band differential CQIs are shown in Table 50 below:

[0329] Table 50

[0330] It should be noted that: the wideband CQI can be but is not limited to absolute value quantization, and can also be differential quantization (specifically refer to the above embodiments).

[0331] 3. Calculate N sets of sub-band differential CQIs based on N sets of wideband CQIs, select N' sets of sub-band differential CQIs as reference CQIs (where 1 ≤ N′ < N), and further differentially calculate the remaining N - N' sets of sub-band differential CQIs based on the N' sets of reference sub-band differential CQIs. Among them, the sub-band differential CQIs in these N sets include {S1, S2, …, SN} sub-band differential CQI values. The number of sub-band differential CQIs in each set can be the same or different. In some embodiments, the number of sub-band differential CQIs in each set is the same, that is, S1 = S2 = … = SN.

[0332] In one embodiment, when N' = 1, select 1 set of sub-band CQI as the reference sub-band CQI. The differential value of this reference sub-band CQI is differentially quantized based on the reference wideband CQI, but the remaining N - 1 sets of sub-band differential CQIs are differentially calculated based on this set of reference sub-band CQI. The index of the reference sub-band CQI can be but is not limited to being consistent with the index of the selected reference wideband CQI. It should be noted that the method of selecting the reference sub-band CQI can be but is not limited to following the rules for selecting the reference wideband CQI above, and will not be elaborated below.

[0333] For example, given two sets of wideband CQI values ​​of 8 and 10, assuming the first set of wideband CQI is selected as the reference wideband CQI, and a fixed 4-bit quantization method is used (1000), the second set of wideband CQI can be differentially reported based on the reference wideband CQI, i.e., using a fixed 3-bit differential quantization (010) to represent the difference of 2. This reference wideband CQI corresponds to a set of sub-band CQIs containing three sub-band differential CQIs, with CQI values ​​of 8, 7, and 9, whose quantization results relative to the reference wideband CQI are still 00, 11, and 01. The second set of sub-band CQIs also contains three sub-band differential CQIs with CQI values ​​of 10, 11, and 9, meaning the corresponding differential CQI values ​​are 2, 4, and 0. If a fixed X = 2-bit quantization is used for the differential value according to the above rules, the quantization result of the second set of sub-band differential CQIs is 10, 10, and 00. Therefore, the specific quantization results of these two broadband CQI sets and their corresponding subband differential CQIs are shown in Table 51 below:

[0334] Table 51

[0335] In one embodiment, when N'>1, N' sets of subband CQI are selected as reference subband CQI, and the remaining N-N' sets of subband differential CQI are divided into N' groups based on the N' sets of reference subband CQI for differential calculation. The remaining N-N' can be divided into N' groups in sequence, or into N' groups at equal intervals, etc. That is, each group can contain (N-N') / N' sets of subband differential CQI. In some embodiments, N' = 2, that is, two sets of subband CQIs are selected as reference subband CQIs. This can be, but is not limited to, selecting the best and worst set of subband CQIs as references, selecting the first and last set of subband CQIs with indices as references, selecting the first and middle set of subband CQIs as references, selecting the middle and last set of subband CQIs as references, selecting the set of subband CQIs corresponding to the preset upper threshold and the set of subband CQIs corresponding to the lower threshold as references, selecting the best / worst set of CQIs with odd indices and / or the best / worst set of subband CQIs with even indices as references, etc.

[0336] It should be noted that the index of the reference subband CQI may, but is not limited to, be the same as the index of the selected reference wideband CQI, and the method of selecting the reference subband CQI may, but is not limited to, follow the rules for selecting the reference wideband CQI mentioned above.

[0337] 4. Calculate N sets of sub - band differential CQIs based on M sets of wide - band CQIs, select M sets of wide - band CQIs as reference CQIs (where 1 ≤ M < N), and further calculate N sets of sub - band differential CQIs by differential calculation based on the M sets of reference wide - band CQIs. Among the sub - band differential CQIs in these N sets, there are {S1, S2, …, SN} sub - band differential CQI values, and the number of sub - band differential CQIs in each set can be the same or different. In some embodiments, M = 1, that is, select 1 set of wide - band CQIs to calculate N sets of sub - band differential CQIs.

[0338] In one embodiment, when M = 1, select 1 set of wide - band CQIs as the reference CQI, and all N sets of sub - band differential CQIs are calculated by differential based on this set of reference wide - band CQIs. It should be noted that the method of selecting the reference wide - band CQI can, but is not limited to, follow the rules of selecting the reference wide - band CQI mentioned above, and will not be elaborated later.

[0339] For example: There are 2 sets of wide - band CQI values which are 8 and 10 respectively. Assume that the first set of wide - band CQI is selected as the reference wide - band CQI. Using the 4 - bit fixed quantization method, they are 1000 respectively. The second set of wide - band CQI can be differentially reported based on the reference wide - band CQI, that is, use 3 - bit fixed differential quantization 010 to represent the difference value of 2. Each of the two sets of sub - band CQIs contains 3 sub - band differential CQIs. The CQI values of the 3 sub - bands in these two sets are 8, 7, 9 and 10, 11, 9 respectively. Their difference values relative to the reference wide - band CQI are 0, - 1, 1 and 2, 3, 1 respectively. If the difference values are quantized using the fixed X = 2 - bit quantization rule as above, the quantization results of the two sets of sub - band differential CQIs are 00, 11, 01 and 10, 10, 01 respectively. Therefore, the specific quantization results of these two sets of wide - band CQIs and their corresponding sub - band differential CQIs are shown in Table 52 below:

[0340] Table 52

[0341] In one embodiment, when M > 1, select M sets of wide - band CQIs as reference CQIs, and all N sets of sub - band differential CQIs are calculated by differential based on these M sets of reference wide - band CQIs or by differential calculation based on Z sets of reference CQIs (1 ≤ Z ≤ M) after processing the M sets of reference wide - band CQIs. It should be noted that the processing methods can, but are not limited to, operations such as taking the average, weighted average, etc. In some embodiments, Z = 1.

[0342] 5. Calculate N sets of sub - band differential CQIs based on N sets of wide - band CQIs, and each set of sub - band differential CQIs is calculated by differential based on the wide - band CQI with the corresponding index. Only part or all of the sub - band differential CQI values are reported in each set of sub - band differential CQIs, and the number of sub - band differential CQIs in each set can be the same or different, that is, {S1, S2, …, SN} ≤ S.

[0343] In one embodiment, the position of the reported differential CQI in each set of sub-band CQIs is associated with the index of the sub-band CQI in each set and the remainder Y of a certain integer A (i.e., mod(index of the sub-band CQI in each set, integer A)) and the index of the number of sub-band CQI sets.

[0344] It should be noted that this rule may be, but is not limited to, the default configuration, or determined through negotiation between the first and second communication nodes (for example, the values ​​of A and Y are configured by the second node to the first node, or the first communication node selects the values ​​of A and Y and reports them to the second communication node, or is set to fixed values).

[0345] In one embodiment, subband differential CQIs with even indices in odd-numbered subband differential CQIs need to be reported, while those with odd indices do not; conversely, subband differential CQIs with odd indices in even-numbered subband differential CQIs need to be reported, while those with even indices do not. The specific arrangement is shown in Table 53 below (in this embodiment, A can be 2, and Y can be 0 or 1).

[0346] Table 53

[0347] It should be noted that in this embodiment, the reporting method of the odd / even subband differential CQI index and the corresponding odd / even index subband can be any combination, and will not be described separately.

[0348] It should be noted that the example provided is just one example. The set index of the sub-band CQI starts from 1. If the index starts from 0, it will also apply to the following examples.

[0349] In one embodiment, the remainder of a subband index with an integer A is Y. The differential CQI value at the subband index corresponding to the remainder result is reported. In each of the N sets of subband CQIs, the integers {A1, A2, ..., AN} configured for reporting the differential CQI can be the same as or different from the remainders {Y1, Y2, ..., YN}. In some embodiments, A1 = A2 = ... = AN. This rule can be, but is not limited to, a default configuration, or determined through negotiation between the first and second communication nodes (e.g., the value of A is configured by the second node for the first node, or the first communication node selects the value of A and reports it to the second node, or it is set to a fixed value).

[0350] For example: Suppose that each subband differential CQI is configured to only report the differential CQI at the index position where the subband index is equal to the remainder value Y=0 when A=4. Refer to Table 54 below for the specific arrangement.

[0351] Table 54

[0352] For example: Suppose that each of these 4 sets of sub-band CQIs is configured to only report the differential CQI at the index position where the sub-band index is equal to the remainder of {A1=A2=…=A4}=4, i.e., {Y1=0,Y2=1,Y3=2,Y4=3}. Refer to Table 55 below for the specific arrangement.

[0353] Table 55

[0354] 6. Calculate N sets of subband differential CQI based on N sets of broadband CQI, and report all or part of the subband differential CQI values ​​(1≤N″≤N) in all N sets or part of N” sets of subband differential CQI. The number of subband differential CQIs reported in N” sets can be the same or different, i.e., {S1, S2, ..., SN}<=S.

[0355] In one embodiment, if the remainder of the index of the sub-band CQI set number divided by a certain integer B is Y', all differential CQI values ​​corresponding to the index of the sub-band CQI set number that match the remainder result are reported. This rule may be, but is not limited to, a default configuration, or determined through negotiation between the first and second communication nodes (e.g., the values ​​of B and Y' are configured by the second node to the first node, or the first communication node selects the values ​​of B and Y' and reports them to the second node, or is set to fixed values).

[0356] For example: Suppose that each subband differential CQI is configured to only report all differential CQIs at the index position where the subband index is equal to the remainder value Y=1 when B=2. Refer to Table 56 below for the specific arrangement.

[0357] Table 56

[0358] In one embodiment, the remainder of the sub-band CQI set index with an integer B is Y', and the remainder of the sub-band index with an integer A is Y. The differential CQI value at the sub-band index corresponding to the remainder result is reported. The integers {A1, A2, ..., AN”}, B, and the remainders {Y1, Y2, ..., YN”}, Y' configured when reporting the sub-band differential CQI in N” sets of sub-band CQI can be the same or different. This rule can be, but is not limited to, a default configuration, or determined through negotiation between the first and second communication nodes (e.g., the values ​​of A, B, Y, Y' are configured by the second node for the first node, or the first communication node selects the values ​​of A, B, Y, Y' and reports them to the second communication node, or is set to fixed values).

[0359] For example: Suppose the configuration is to only report the index of the sub-band set number, the remainder value Y' = 1 when B = 2, and the reported sub-band differential CQI, and the index position of the sub-band index with the remainder value Y = 0 when A = 4. The specific reporting method is shown in Table 57 below:

[0360] Table 57

[0361] In one embodiment, assuming that the remainder of the index of each sub-band CQI set with a certain integer B is Y' and the remainder of the sub-band index with a certain integer A is Y, the differential CQI value on the corresponding sub-band index of each set is reported when the remainder Y' and Y are the same.

[0362] For example: Suppose the configuration is to report the difference CQI of the index position where the remainder Y' of each sub-band index and B=4 is equal to the remainder Y of each sub-band index and A=4 (i.e., A=B and Y=Y'), the specific reporting method is shown in Table 58 below:

[0363] Table 58

[0364] It should be noted that in this embodiment, if A = B and is less than or equal to the total number of subband CQI sets N, then all S subband indexes will have subband differential CQI values ​​reported.

[0365] For example: Suppose the configuration is to report the difference CQI of the index position where the remainder Y' of each sub-band index with B=2 is equal to the remainder Y of each sub-band index with A=4 (i.e., A≠B and Y=Y'), the specific reporting method is shown in Table 59 below:

[0366] Table 59

[0367] In one embodiment, some N” packages report all differential CQI, while the remaining NN” packages report differentially or a certain pattern (such as a comb-like pattern).

[0368] For example: Assume that the subband differential CQI of set 0 and set 3 are both reported. The differential CQI of the index of the remaining subbands of sets 1 and 2 with the remainder Y' of B=2 is the index position of each subband differential CQI where the remainder Y of the subband index with A=2 is equal (i.e., A=B and Y=Y'). The specific reporting method is shown in Table 60 below:

[0369] Table 60

[0370] It should be noted that the subband differential CQI values ​​reported using these methods can be combined with various differential methods mentioned earlier, such as differential calculation based on each broadband CQI, differential calculation based on reference broadband CQI, and calculation based on reference subband CQI. These will not be elaborated on further.

[0371] It should be noted that the above pattern design also applies to the sub-band differential CQI reporting use case.

[0372] In some embodiments, the first communication node reports the CQI to the second communication node based on a certain CQI pattern and / or its pattern parameters.

[0373] In one embodiment, the CQI pattern and / or its pattern parameters may be configured by default.

[0374] In one embodiment, the second communication node configures W sets of patterns (W being an integer greater than or equal to 1) to the first communication node, and the first communication node reports CQI based on one of the patterns.

[0375] In one embodiment, the second communication node configures a set of patterns for the first communication node, and the first communication node reports the CQI according to the configured CQI patterns.

[0376] In one embodiment, the second communication node configures W sets (W≥1) of patterns to the first communication node. The first communication node selects one set of CQI patterns from the W sets according to its capabilities and reports the CQI. At the same time, the first communication node needs to report the sequence number of the selected pattern.

[0377] In one embodiment, the signaling configured for the second communication node can be either higher-layer signaling or physical-layer signaling.

[0378] In one embodiment, the W” set of patterns selected by the first communication node can be indicated based on hierarchical signaling. M sets of CQI patterns are configured in the higher-layer RRC signaling, the MAC layer signaling indicates the W' set of CQI patterns among the M sets of CQI patterns, and then the DCI signaling indicates the W” set of CQI patterns among the W' set of CQI patterns for the first communication node to select.

[0379] In some embodiments, when the first communication node reports a CQI to the second communication node based on a certain CQI pattern and / or its pattern parameters, it may report multiple sets of CQI consecutively based on a certain CQI pattern and / or its pattern parameters, or it may report multiple sets of CQI at equal intervals based on a certain CQI pattern and / or its pattern parameters. No specific limitation is made here.

[0380] In one embodiment, the pattern category indication information (e.g., represented by 2 bits), the index offset value of the starting position of the first CQI among the multiple CQIs to be reported, the number of multiple CQIs to be reported, and the corresponding CQI value for each set (e.g., CQI absolute value or CQI difference value) can be arranged sequentially. It should be noted that, but not limited to, when reporting multiple CQIs starting from the first CQI, i.e., using the index of the first CQI as the starting point, the starting position index can also be omitted by default. Refer to Table 61 below for the specific arrangement.

[0381] Table 61

[0382] For example: Based on the PMI in the four CSI reports, four sets of broadband CQIs are calculated, with values ​​of 6, 10, 9, and 12 respectively. Assuming that the first communication node reports the second and third sets of CQIs based on the second set of CQI patterns, where the pattern category indication information corresponding to the second set of CQI patterns is 01, and the quantization results of the second and third sets of CQIs are 1010 and 1001 respectively, then these two sets of broadband CQIs are reported in the order shown in Table 62 below (i.e., 01011010101001).

[0383] Table 62

[0384] In one embodiment, the pattern category indication information (e.g., represented by 2 bits), the index offset value of the starting position of the first CQI among the multiple sets of CQI to be reported, the index offset value of the ending position of the last CQI among the multiple sets of CQI to be reported, the interval value, and the corresponding CQI value (such as the absolute value of CQI or the difference value of CQI) can be arranged in the following order. For the specific arrangement, please refer to Table 63 below.

[0385] Table 63

[0386] For example: Based on the PMI in the four CSI reports, four sets of broadband CQIs are calculated, with values ​​of 6, 10, 9, and 12 respectively. Assuming that the first communication node reports multiple sets of CQIs based on the third set of CQI patterns at intervals of 2, and the second set of CQIs is the first of the multiple sets of CQIs that need to be reported, then it can be determined that the second and fourth sets of CQIs need to be reported. The pattern category indication information corresponding to the third set of CQI patterns is 10, and the quantization results of the second and fourth sets of CQIs are 1010 and 1100, respectively. Then, these two sets of broadband CQIs are reported in the order shown in Table 64 below (i.e., 1001111010101100).

[0387] Table 64

[0388] In some embodiments, when subband CQI packets are calculated and / or reported, the subband packet method may be processed, but is not limited to, as follows:

[0389] 1. K consecutive subbands are divided into a subband group. The first communication node calculates a subband group differential CQI value based on the k' subband PMIs in each subband group (where 1 ≤ k′ ≤ k). See Table 65 for the specific grouping method:

[0390] Table 65

[0391] 2. K subbands of equal interval d are divided into a subband group (d>1). The first communication node calculates the differential CQI value of one subband group based on the PMIs of k' subbands in each subband group (where 1≤k′≤k). See Table 66 for the specific grouping method:

[0392] Table 66

[0393] 3. Take k / 2 subbands from both the beginning and end to form a subband group. The first communication node calculates the differential CQI value for one subband group based on the k' subband PMIs in each subband group (where 1 ≤ k′ ≤ k). See Table 67 for the specific grouping method:

[0394] Table 67

[0395] 4. Each subband group reports p subband group differential CQIs, where p is an integer ≥ 1.

[0396] In one embodiment, the average or weighted average of the k' subband CQIs in each subband group is taken as the subband CQI of that subband group and differential quantization is performed.

[0397] In one embodiment, the best or worst, or the average of the best and worst, or the best and worst combined, are taken as the subband CQI of the subband group in each subband group and differentially quantized.

[0398] In one embodiment, the average of the first, last, middle, or two middle CQIs of the k' subbands in each subband group, or the first and last, the first and middle, or the middle and last together, is taken as the subband CQI of that subband group and differentially quantized.

[0399] In one embodiment, for the k' sub - band CQIs in each sub - band group, one or more CQIs that meet a certain threshold are taken as the sub - band CQIs of the sub - band group and are differentially quantized. The threshold can be, but is not limited to, default configuration, negotiation between the first communication node and the second communication node, etc. Among them, when one CQIs that meet a certain threshold is taken as the sub - band CQIs of the sub - band group among the k' sub - band CQIs in each sub - band group, the one CQIs that meet a certain threshold can be obtained through the average value or weighted average value of multiple CQIs that meet the threshold, and no specific limitation is made here.

[0400] 5. Assume there are S sub - bands, and every k sub - bands form a sub - band group. When S cannot be divided evenly by k, that is, there are only r sub - bands in the sub - band group, where 1 ≤ r < k, then there is a processing method as shown in Table 68 below:

[0401] Table 68

[0402] In one embodiment, when S cannot be divided evenly by k, that is, there are only r sub - bands in the sub - band group, in order to ensure that each sub - band group reports sub - band differential CQIs, then:

[0403] (1) The sub - band group reports the differential CQIs value of the first sub - band;

[0404] (2) The sub - band group reports the differential CQIs value of the last sub - band;

[0405] (3) The sub - band group reports the differential CQIs value of the middle sub - band;

[0406] (4) The sub - band group reports the average differential CQIs value of the r sub - bands;

[0407] (5) The sub - band group reports the average differential CQIs value of some r' sub - bands among the r sub - bands, where 1 < r' < r (for example: the first and the last, the first and the middle one, the middle one and the last, the best and the worst, r' that meet the threshold, etc.);

[0408] (6) The sub - band group reports the weighted average differential CQIs value of some r' sub - bands among the r sub - bands, where 1 < r' < r (for example: the first and the last, the first and the middle one, the middle one and the last, the best and the worst, r' that meet the threshold, etc.).

[0409] In one embodiment, when S cannot be divided evenly by k, that is, there are only r sub - bands in the sub - band group, it can be reported according to the following rules:

[0410] (1) The sub - band group does not report sub - band differential CQIs;

[0411] (2) When r < k / 2, this sub-band group does not report the sub-band differential CQI; conversely, this sub-band group reports the sub-band differential CQI.

[0412] (3) This sub-band group reports the sub-band differential CQI only when a certain threshold is met (e.g., CQI > CQI_TH).

[0413] (4) Dynamically adjust the number of sub-bands included in each sub-band group.

[0414] 6. When S cannot be divided evenly by k, that is, when there are only r sub-bands in this sub-band group, the following processing methods are used for dynamically adjusting the number of sub-bands included in the sub-band group:

[0415] (1) Dynamically adjust the number of sub-bands k included in the sub-band group so that the number k included in each sub-band group is the same.

[0416] For example: If there are 25 sub-bands in a set of sub-band CQIs and each 4 sub-bands form a sub-band group, then there are 6 sub-band groups with 1 sub-band left over that cannot form a complete sub-band group. However, after dynamically adjusting to 5 sub-band groups, there are 5 sub-bands in each sub-band group and it can be evenly divided, that is, report the differential CQI values of 5 sub-band groups.

[0417] (2) Dynamically adjust the number of sub-bands k included in the sub-band group so that the number k included in each sub-band group can be different.

[0418] For example: If there are 26 sub-bands in a set of sub-band CQIs and each 4 sub-bands form a sub-band group, then there are 6 sub-band groups with 2 sub-bands left over that cannot form a complete sub-band group. However, after dynamically adjusting, one sub-band group contains 6 sub-bands and the remaining each sub-band group contains 4 sub-bands, that is, still form 5 complete sub-band groups and report the differential CQI values of these 5 sub-band groups.

[0419] It should be noted that: when dynamically adjusting the number of sub-bands, for the second communication node to be able to decode the content of the CQI, it needs to have the same understanding as the first communication node. It can be but is not limited to the first communication node reporting to the second communication node the number of sub-bands and / or the number of sub-band groups in the adjusted sub-band group, the sub-band group index of the adjusted number of sub-bands reported by the first communication node and its corresponding adjusted number of sub-bands (e.g., it can be but is not limited to reporting the index through binary quantization index method, bitmap method, etc.), or a certain grouping pattern and / or its pattern index, etc. In addition, the dynamic adjustment of the number of sub-bands can be but is not limited to the first communication node adjusting through AI or other machine learning algorithms.

[0420] In some embodiments, when the first communication node processes the CSI report, the granularity of the PMI and CQI calculations can be different. It should be noted that the granularity of the PMI and CQI can be flexibly configured through signaling or tables. Signaling can include physical layer signaling or higher-layer signaling; specific descriptions of physical layer and higher-layer signaling can be found in the preceding descriptions and are not specifically limited here. Tables can be a default configuration, or determined through negotiation between the first and second communication nodes, or configured by the second communication node for the first communication node; these are not specifically limited here.

[0421] 1. In a set of CSI content, the granularity of subband CQI reporting is coarser than that of subband PMI.

[0422] In one embodiment, the granularity of subband CQI reporting is subband group, while the granularity of subband PMI reporting is subband. That is, subband differential CQI is reported in all or part of the subband groups, while subband PMI is reported in all or part of the subband groups. In this case, a subband group can report more than one subband group differential CQI.

[0423] For example: Assuming each CSI has 12 subbands, and every four consecutive subbands form a subband group, there are three subband groups. The reporting method is shown in Table 69 below. Each subband reports one subband PMI, and each subband group reports one subband group differential CQI. The calculation method can be found in the above example.

[0424] Table 69

[0425] For example, assuming each CSI has 12 subbands, and every four consecutive subbands form a subband group, there are three subband groups. The reporting method is shown in Table 70 below. Each subband reports one subband PMI, while each subband group reports two subband group differential CQIs (e.g., including the best subband group differential CQI and the worst subband group differential CQI). The calculation method can be referred to the above embodiment.

[0426] Table 70

[0427] 2. In a set of CSI content, the granularity of subband CQI reporting is finer than that of subband PMI.

[0428] In one embodiment, the granularity of sub-band CQI reporting is sub-band, while the granularity of sub-band PMI reporting is sub-band group. That is, sub-band differential CQI is reported in all S sub-bands or a portion of n sub-bands, while sub-band group PMI is reported in all or a portion of the sub-bands. It should be noted that the position index for selecting the reported sub-band differential CQI can be referred to the above embodiment.

[0429] For example: Assuming each CSI has 12 subbands, for subband CQI, only the differential CQI of 2 subbands is reported (e.g., the 0th subband and the 11th subband; for subband PMI, every 2 consecutive subbands form a subband group), then there are 6 PMI subband groups. The reporting method is shown in Table 71 below. The CQI calculation method can be found in the above embodiment.

[0430] Table 71

[0431] 3. Within a single CSI dataset, the granularity of subband CQI reporting is consistent with that of subband PMI.

[0432] In one embodiment, the granularity of subband CQI reporting is subband group, and the granularity of subband PMI reporting is also subband group. The number of subbands contained in the subband group can be the same or different. That is, subband differential CQI is reported in all or part of the subband group, while subband PMI is reported in all or part of the subband group. Among them, a subband group can report more than or equal to one subband group differential CQI.

[0433] For example, assuming each CSI has 12 subbands, for subband CQI, every 4 consecutive subbands form a subband group, resulting in 3 CQI subband groups; for subband PMI, every 2 consecutive subbands form a subband group, resulting in 6 PMI subband groups. The reporting method is shown in Table 72 below. Each PMI subband group reports one subband group PMI, while each CQI subband group reports one subband group differential CQI. The calculation method can be referred to the above embodiment.

[0434] Table 72

[0435] For example, assuming each CSI has 12 subbands, for subband CQI, every 4 consecutive subbands form a subband group, resulting in 3 CQI subband groups; for subband PMI, every 2 consecutive subbands form a subband group, resulting in 6 PMI subband groups. The reporting method is shown in Table 73 below. Each PMI subband group reports 1 subband group PMI, while each CQI subband group reports two subband group differential CQIs (e.g., the differential CQI of the best subband group and the differential CQI of the worst subband group). The calculation method can be referred to the above embodiment.

[0436] Table 73

[0437] For example, assuming each CSI has 12 subbands, for subband CQI, every two consecutive subbands form a subband group, resulting in 6 CQI subband groups; for subband PMI, every two consecutive subbands form a subband group, resulting in 6 PMI subband groups. The reporting method is shown in Table 74 below. Each PMI subband group reports one subband group PMI, while each CQI subband group reports one subband group differential CQI. The calculation method can be found in the above embodiment.

[0438] Table 74

[0439] In one embodiment, the granularity of subband CQI reporting is subband, and the granularity of subband PMI reporting is also subband. The number of subbands reported by both can be the same or different. That is, subband differential CQI is reported for all S subbands or a portion of n subbands, while subband PMI is reported for all S subbands or a portion of n' subbands, where n, n' <S。

[0440] For example: Assuming each CSI has 12 subbands, for subband CQI, only the differential CQI of 2 subbands is reported (e.g., subband 0 and subband 11); for subband PMI, all 12 subband PMIs are reported. The reporting method is shown in Table 75 below.

[0441] Table 75

[0442] It should be noted that the specific selection and reporting methods for broadband and / or subband PMIs in multiple CSI content sets can also refer to the above embodiments. Furthermore, the embodiments may use, but are not limited to, a precoding matrix indicator (PMI). A precoding matrix is ​​also a typical use case and can replace the PMI in the embodiments.

[0443] It should be noted that since PMI can also be divided into broadband PMI and subband PMI, the grouping, permutation, and mapping processing methods for CQI in the above embodiments are also applicable to PMI. For the grouping, permutation, and mapping processing methods for broadband PMI and subband PMI, please refer to the processing methods for broadband CQI and subband CQI in the above embodiments; they will not be repeated here.

[0444] In one embodiment, by employing the information processing method described in steps S11 to S13, the first communication device can first perform channel state measurements at K time points based on the reference signal sent by the second communication device, obtaining K sets of channel state information, where K is an integer greater than zero; then, it generates a channel state information report based on the K sets of channel state information, wherein the channel state information report includes a first channel state information report portion and a second channel state information report portion, and the K sets of channel state information are mapped between the first and second channel state information report portions; then, it sends the channel state information report to the second communication device, enabling the second communication device to perform data transmission using the corresponding data transmission strategy based on the channel state information report. Since K sets of channel state information are obtained by performing channel state measurements at K time points based on the reference signal sent by the second communication device, and the K sets of channel state information are mapped between the first and second channel state information report portions, K sets of channel state information corresponding to K time points can be carried in a single channel state information report. This allows for more accurate transmission of channel state information at multiple time points between the first and second communication devices, which is beneficial for improving the processing performance of channel state information.

[0445] This disclosure also provides an information processing method applied to a second communication device. As shown in FIG37, the method includes the following steps:

[0446] S21. Send a reference signal to the first communication device. The reference signal is used to enable the first communication device to perform channel state measurements at K time points to obtain K sets of channel state information, where K is an integer greater than zero.

[0447] S22. Receive a channel status information report sent by the first communication device, wherein the channel status information report is generated by the first communication device based on K sets of channel status information, and the channel status information report includes a first channel status information report part and a second channel status information report part, and the K sets of channel status information are mapped in the first channel status information report part and the second channel status information report part.

[0448] S23. Based on the channel state information report, adopt the corresponding data transmission strategy to transmit data.

[0449] In some embodiments, the second communication device sends a reference signal, such as a Channel State Information Reference Signal (CSI-RS), to enable the first communication device to perform channel state measurement based on the reference signal to obtain channel state information. Then, the second communication device receives a channel state information report generated by the first communication device based on the measured channel state information, and performs data transmission using an appropriate data transmission strategy based on the channel state information report.

[0450] In embodiments of this disclosure, the content of the CSI report received by the second communication device from the first communication device is represented by bits or elements represented by groups of bits. This disclosure does not impose any special limitations on this aspect.

[0451] In the embodiments of this disclosure, the CSI report received by the second communication device can be divided into two parts: a first channel state information report (Part 1 CSI) and a second channel state information report (Part 2 CSI). The received CSI report includes K sets of CSIs, where K is a positive integer. A set of CSIs may, but is not limited to, correspond to a single moment in time. The specific content of the received CSI report includes at least the Rank Indicator (RI), Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), Layer Indicator (LI), and Non-Zero Coefficient (NZC). Part 1 CSI may contain RI, CQI, and other information, while Part 2 CSI may contain PMI and some CQI information. Part 1 CSI and Part 2 CSI are independently encoded. When uplink transmission resources are limited and not all CSI information can be transmitted, content can be discarded according to the priority of the CSI information until the conditions are met.

[0452] In some embodiments, Part 1 CSI has a higher priority than Part 2 CSI. To ensure that the second communication device can accurately receive Part 1 CSI, a specific method may be used, but is not limited to, specifying that the modulation order of Part 1 CSI is less than that of Part 2 CSI; another method is specifying that the coding rate of Part 1 CSI is less than that of Part 2 CSI; yet another method is specifying that the MCS level of the transmitted Part 1 CSI is less than that of Part 2 CSI; yet another method is specifying that the bit error rate (BER) / block error rate (BLER) of Part 1 CSI is less than that of Part 2 CSI; yet another method is specifying that the transmit power of Part 1 CSI is higher than that of Part 2 CSI; yet another method is specifying that Part 1 CSI can support repetition or retransmission mechanisms compared to Part 2 CSI.

[0453] In the embodiments of this disclosure, each set of channel state information includes wideband channel quality indication information and multiple sub-band channel quality indication information. The channel state information report includes wideband channel quality indication information corresponding to K sets of channel state information, and all or part of the sub-band channel quality indication information corresponding to each set of channel state information. The sub-band channel quality indication information includes, but is not limited to, sub-band differential channel quality indication information. In one embodiment, the sub-band differential channel quality indication information may represent the absolute value of the sub-band CQI; in another embodiment, the sub-band differential channel quality indication information may represent the differential value of the sub-band CQI. This disclosure uses the example of a channel state information report including multiple sub-band differential channel quality indication information for further description.

[0454] In some embodiments, the processing of the K sets of CSI report content by the first communication device includes, for example, the process of mapping the K sets of channel status information to the first channel status information report section and the second channel status information report section, the processing of CQI grouping and arrangement mapping, the processing of PMI grouping and arrangement mapping, etc., and so on. These can all be referred to the relevant content in the preceding embodiments. To avoid redundancy, further details are omitted here.

[0455] In one embodiment, by employing the information processing method described in steps S21 to S23, the second communication device first sends a reference signal to the first communication device to enable the first communication device to perform channel state measurements at K time points to obtain K sets of channel state information, where K is an integer greater than zero. Then, the second communication device receives a channel state information report sent by the first communication device. This report is generated by the first communication device based on the K sets of channel state information and includes a first channel state information report portion and a second channel state information report portion. The K sets of channel state information are mapped between the first and second channel state information report portions. Next, data is transmitted using a corresponding data transmission strategy based on the channel state information report. Since the K sets of channel state information are obtained by the first communication device performing channel state measurements at K time points based on the reference signal sent by the second communication device, and these K sets of channel state information are mapped between the first and second channel state information report portions, a single channel state information report can carry K sets of channel state information corresponding to the K time points. This allows for more accurate transmission of channel state information at multiple time points between the second and first communication devices, improving the processing performance of the channel state information.

[0456] In addition, one embodiment of this disclosure also discloses a communication device, which includes one or more processors and a memory storing one or more computer programs. When the one or more computer programs are executed by one or more processors, the one or more processors are able to implement the information processing method as described in any of the preceding embodiments.

[0457] In addition, one embodiment of this disclosure also discloses a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the information processing method as described in any of the preceding embodiments.

[0458] Furthermore, one embodiment of this disclosure also discloses a computer program product, including a computer program that, when executed by a processor, implements the information processing method as described in any of the preceding embodiments.

[0459] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0460] The above describes some embodiments of this disclosure, but this disclosure is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the scope of this disclosure, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this disclosure.

Claims

1. An information processing method applied to a first communication device, the method comprising: performing channel state measurement at K time instants according to reference signals transmitted by a second communication device, to obtain K sets of channel state information, wherein K is an integer greater than zero; generating a channel state information report according to the K sets of channel state information, wherein the channel state information report comprises a first channel state information report part and a second channel state information report part, and the K sets of channel state information are mapped in the first channel state information report part and the second channel state information report part; transmitting the channel state information report to the second communication device, so that the second communication device adopts a corresponding data transmission strategy for data transmission according to the channel state information report.

2. The method of claim 1, wherein, Each set of the channel state information comprises wideband channel quality indicator information and a plurality of subband differential channel quality indicator information.

3. The method of claim 2, wherein, The channel state information report comprises the wideband channel quality indicator information corresponding to the K sets of channel state information, and all or part of the subband differential channel quality indicator information corresponding to each set of the channel state information.

4. The method of claim 3, wherein: the wideband channel quality indicator information corresponding to the K sets of channel state information, and all or part of the subband differential channel quality indicator information corresponding to the K sets of channel state information, are mapped in the first channel state information report part; or, the wideband channel quality indicator information corresponding to P sets of the K sets of channel state information, and all or part of the subband differential channel quality indicator information corresponding to the P sets of the K sets of channel state information, are mapped in the first channel state information report part; and the wideband channel quality indicator information corresponding to K-P sets of the K sets of channel state information, and all or part of the subband differential channel quality indicator information corresponding to the K-P sets of the K sets of channel state information, are mapped in the second channel state information report part, wherein P is an integer greater than zero and smaller than K; or, the wideband channel quality indicator information corresponding to the K sets of channel state information is mapped in the first channel state information report part; and all or part of the subband differential channel quality indicator information corresponding to the K sets of channel state information is mapped in the second channel state information report part; or, the wideband channel quality indicator information corresponding to P sets of the K sets of channel state information is mapped in the first channel state information report part; and the wideband channel quality indicator information corresponding to K-P sets of the K sets of channel state information, and all or part of the subband differential channel quality indicator information corresponding to the K sets of channel state information, are mapped in the second channel state information report part, wherein P is an integer greater than zero and smaller than K.

5. The method of claim 2, wherein, The channel state information report comprises the wideband channel quality indication information corresponding to K sets of the channel state information, and all or part of the subband differential channel quality indication information corresponding to each of N sets of the channel state information, wherein N is an integer less than K.

6. The method of claim 5, wherein: The wideband channel quality indication information corresponding to K sets of the channel state information, and all or part of the subband differential channel quality indication information corresponding to N sets of the channel state information are mapped in the first channel state information report part. Or, the wideband channel quality indication information corresponding to P sets of the channel state information among K sets of the channel state information, and all or part of the subband differential channel quality indication information corresponding to P sets of the channel state information among N sets of the channel state information are mapped in the first channel state information report part; and the wideband channel quality indication information corresponding to K-P sets of the channel state information among K sets of the channel state information, and all or part of the subband differential channel quality indication information corresponding to N-P sets of the channel state information among N sets of the channel state information are mapped in the second channel state information report part, wherein P is an integer greater than zero and less than or equal to N. Or, the wideband channel quality indication information corresponding to K sets of the channel state information is mapped in the first channel state information report part; and all or part of the subband differential channel quality indication information corresponding to N sets of the channel state information is mapped in the second channel state information report part. Or, the wideband channel quality indication information corresponding to P sets of the channel state information among K sets of the channel state information is mapped in the first channel state information report part; and the wideband channel quality indication information corresponding to K-P sets of the channel state information among K sets of the channel state information, and all or part of the subband differential channel quality indication information corresponding to N sets of the channel state information are mapped in the second channel state information report part, wherein P is an integer greater than zero and less than or equal to N.

7. The method of claim 2, wherein, The channel state information report comprises the wideband channel quality indication information corresponding to M sets of the channel state information, and all or part of the subband differential channel quality indication information corresponding to each of K sets of the channel state information, wherein M is an integer less than K.

8. The method of claim 7, wherein: The wideband channel quality indication information corresponding to M sets of the channel state information, and all or part of the subband differential channel quality indication information corresponding to K sets of the channel state information are mapped in the first channel state information report part. Or, the wideband channel quality indicator information corresponding to P of the channel state information in the M channel state information and all or part of the sub-band differential channel quality indicator information corresponding to P of the channel state information in the K channel state information are mapped in the first channel state information report part; and the wideband channel quality indicator information corresponding to M-P of the channel state information in the M channel state information and all or part of the sub-band differential channel quality indicator information corresponding to K-P of the channel state information in the K channel state information are mapped in the second channel state information report part, wherein P is an integer greater than zero and less than or equal to M; Or, the wideband channel quality indicator information corresponding to M of the channel state information is mapped in the first channel state information report part; and all or part of the sub-band differential channel quality indicator information corresponding to K of the channel state information is mapped in the second channel state information report part; Or, the wideband channel quality indicator information corresponding to P of the channel state information in the M channel state information is mapped in the first channel state information report part; and the wideband channel quality indicator information corresponding to M-P of the channel state information in the M channel state information and all or part of the sub-band differential channel quality indicator information corresponding to K of the channel state information are mapped in the second channel state information report part, wherein P is an integer greater than zero and less than or equal to M.

9. The method of claim 2, wherein, The channel state information report includes the wideband channel quality indicator information corresponding to M of the channel state information, and all or part of the sub-band differential channel quality indicator information corresponding to each of the channel state information in the M channel state information, wherein M is an integer less than K.

10. The method of claim 9, wherein: The wideband channel quality indicator information corresponding to M of the channel state information and all or part of the sub-band differential channel quality indicator information corresponding to M of the channel state information are mapped in the first channel state information report part; Or, the wideband channel quality indicator information corresponding to P of the channel state information in the M channel state information and all or part of the sub-band differential channel quality indicator information corresponding to P of the channel state information in the M channel state information are mapped in the first channel state information report part; and the wideband channel quality indicator information corresponding to M-P of the channel state information in the M channel state information and all or part of the sub-band differential channel quality indicator information corresponding to M-P of the channel state information in the M channel state information are mapped in the second channel state information report part, wherein P is an integer greater than zero and less than or equal to M. Or, the wideband channel quality indicator information corresponding to the M sets of channel state information is mapped in the first channel state information report part; and all or part of the subband differential channel quality indicator information corresponding to the M sets of channel state information is mapped in the second channel state information report part. Or, the wideband channel quality indicator information corresponding to the P sets of channel state information in the M sets of channel state information is mapped in the first channel state information report part; and the wideband channel quality indicator information corresponding to the M-P sets of channel state information in the M sets of channel state information, and all or part of the subband differential channel quality indicator information corresponding to the M sets of channel state information, are mapped in the second channel state information report part, wherein P is an integer greater than zero and less than or equal to M.

11. The method of claim 2, wherein, The channel state information report comprises the wideband channel quality indicator information corresponding to the M sets of channel state information, and all or part of the subband differential channel quality indicator information corresponding to the N sets of channel state information, wherein M and N are integers less than K.

12. The method of claim 11, wherein, M is greater than N, wherein: The wideband channel quality indicator information corresponding to the M sets of channel state information, and all or part of the subband differential channel quality indicator information corresponding to the N sets of channel state information, are mapped in the first channel state information report part. Or, the wideband channel quality indicator information corresponding to the P sets of channel state information in the M sets of channel state information, and all or part of the subband differential channel quality indicator information corresponding to the P sets of channel state information in the N sets of channel state information, are mapped in the first channel state information report part; and the wideband channel quality indicator information corresponding to the M-P sets of channel state information in the M sets of channel state information, and all or part of the subband differential channel quality indicator information corresponding to the N-P sets of channel state information in the N sets of channel state information, are mapped in the second channel state information report part, wherein P is an integer greater than zero and less than N. Or, the wideband channel quality indicator information corresponding to the M sets of channel state information is mapped in the first channel state information report part; and all or part of the subband differential channel quality indicator information corresponding to the N sets of channel state information is mapped in the second channel state information report part. Or, the wideband channel quality indicator information corresponding to the P sets of channel state information in the M sets of channel state information is mapped in the first channel state information report part; and the wideband channel quality indicator information corresponding to the M-P sets of channel state information in the M sets of channel state information, and all or part of the subband differential channel quality indicator information corresponding to the N sets of channel state information, are mapped in the second channel state information report part, wherein P is an integer greater than zero and less than or equal to N.

13. The method of claim 11, wherein, M is less than N, wherein: The wideband channel quality indication information corresponding to the M sets of channel state information and all or part of the subband differential channel quality indication information corresponding to the N sets of channel state information are mapped in the first channel state information report part; Or, the wideband channel quality indication information corresponding to P sets of the M sets of channel state information and all or part of the subband differential channel quality indication information corresponding to P sets of the N sets of channel state information are mapped in the first channel state information report part; and the wideband channel quality indication information corresponding to M-P sets of the M sets of channel state information and all or part of the subband differential channel quality indication information corresponding to N-P sets of the N sets of channel state information are mapped in the second channel state information report part, wherein P is an integer greater than zero and less than or equal to M; Or, the wideband channel quality indication information corresponding to the M sets of channel state information is mapped in the first channel state information report part; and all or part of the subband differential channel quality indication information corresponding to the N sets of channel state information is mapped in the second channel state information report part; Or, the wideband channel quality indication information corresponding to P sets of the M sets of channel state information is mapped in the first channel state information report part; and the wideband channel quality indication information corresponding to M-P sets of the M sets of channel state information and all or part of the subband differential channel quality indication information corresponding to the N sets of channel state information are mapped in the second channel state information report part, wherein P is an integer greater than zero and less than or equal to M.

14. The method of claim 1, wherein, Each set of the channel state information includes precoding matrix indication information and wideband channel quality indication information, and the wideband channel quality indication information is calculated according to the precoding matrix indication information.

15. The method of claim 14, wherein, The number of the wideband channel quality indication information used for generating the channel state information report is 1; and the calculation method of the wideband channel quality indication information used for generating the channel state information report includes one of the following: The wideband channel quality indication information is calculated based on the precoding matrix indication information corresponding to a first set of the K sets of channel state information; The wideband channel quality indication information is calculated based on the precoding matrix indication information corresponding to a Kth set of the K sets of channel state information; The wideband channel quality indication information is calculated based on the precoding matrix indication information corresponding to the channel state information at the middle position of the K sets of channel state information; The wideband channel quality indication information is calculated based on the precoding matrix indication information corresponding to a first set of the K sets of channel state information and the precoding matrix indication information corresponding to a Kth set of the K sets of channel state information; The wideband channel quality indicator information is calculated based on the precoding matrix indicator information corresponding to all of the channel state information in the K sets of channel state information.

16. The method of claim 14, wherein, The number of the wideband channel quality indicator information used for generating the channel state information report is greater than 1; and the calculation of the wideband channel quality indicator information used for generating the channel state information report comprises one of the following: The K sets of wideband channel quality indicator information are calculated based on the precoding matrix indicator information corresponding to all of the channel state information in the K sets of channel state information; The M sets of wideband channel quality indicator information are calculated based on the precoding matrix indicator information corresponding to the M sets of channel state information in the K sets of channel state information; The M sets of wideband channel quality indicator information are calculated based on the precoding matrix indicator information corresponding to all of the channel state information in the K sets of channel state information; The M sets of wideband channel quality indicator information are calculated based on the precoding matrix indicator information corresponding to the K' sets of channel state information in the K sets of channel state information, wherein K' is less than K and greater than M.

17. The method of claim 1, wherein, Each set of the channel state information comprises wideband channel quality indicator information, the wideband channel quality indicator information is mapped in the channel state information report in the form of a numerical value, and the numerical value of the wideband channel quality indicator information mapped in the channel state information report is obtained by one of the following methods: The wideband channel quality indicator information is mapped into a corresponding binary numerical value to obtain the numerical value of the wideband channel quality indicator information mapped in the channel state information report, wherein the number of bits of the binary numerical value obtained by mapping corresponds to the wideband channel quality indicator information; The wideband channel quality indicator information is mapped into a corresponding binary numerical value according to a preset bit number to obtain the numerical value of the wideband channel quality indicator information mapped in the channel state information report, wherein the number of bits of the binary numerical value obtained by mapping is consistent with the preset bit number; Reference channel quality indicator information is determined from the wideband channel quality indicator information corresponding to multiple sets of the channel state information, and a difference between the wideband channel quality indicator information and the reference channel quality indicator information is mapped into a corresponding binary numerical value to obtain the numerical value of the wideband channel quality indicator information mapped in the channel state information report, wherein the number of bits of the binary numerical value obtained by mapping corresponds to the difference; Reference channel quality indicator information is determined from the wideband channel quality indicator information corresponding to multiple sets of the channel state information, and a difference between the wideband channel quality indicator information and the reference channel quality indicator information is mapped into a corresponding binary numerical value according to a preset bit number to obtain the numerical value of the wideband channel quality indicator information mapped in the channel state information report, wherein the number of bits of the binary numerical value obtained by mapping is consistent with the preset bit number.

18. The method of claim 17, wherein, Each set of the channel state information further comprises a wideband channel quality indicator information index. The wideband channel quality indicator index is mapped into the channel state information report in the form of a numerical value, and the numerical value of the wideband channel quality indicator index is obtained by one of the following ways: A mapping formula is determined according to the number of channel state information, and the wideband channel quality indicator index is mapped into a corresponding binary numerical value according to the mapping formula; A bit map is determined according to the number of channel state information, and the wideband channel quality indicator index is mapped into the bit map; Reference channel quality indicator information is determined among the wideband channel quality indicator information corresponding to multiple sets of channel state information, and the numerical value of the wideband channel quality indicator index is determined according to the position of the reference channel quality indicator information in the wideband channel quality indicator information corresponding to multiple sets of channel state information.

19. The method of claim 1, wherein, Each set of channel state information includes wideband channel quality indicator information, and the wideband channel quality indicator information corresponding to multiple sets of channel state information is mapped into the channel state information report by the following sorting: The wideband channel quality indicator information corresponding to multiple sets of channel state information is mapped into the channel state information report in a preset arrangement order.

20. The method of claim 19, wherein, When the wideband channel quality indicator information corresponding to multiple sets of channel state information is arranged in a preset arrangement order, a sequence is formed, and the sequence further includes a marker bit for indicating the number of wideband channel quality indicator information corresponding to multiple sets of channel state information.

21. The method of claim 19, wherein, Each set of channel state information further includes a wideband channel quality indicator index, and the wideband channel quality indicator index corresponding to multiple sets of channel state information is mapped into the channel state information report by the following sorting: The wideband channel quality indicator index corresponding to multiple sets of channel state information is mapped into the channel state information report in a preset arrangement order.

22. The method of claim 21, wherein: The wideband channel quality indicator index corresponding to multiple sets of channel state information is located in front of the wideband channel quality indicator information corresponding to multiple sets of channel state information; Or, the wideband channel quality indicator index corresponding to multiple sets of channel state information is located behind the wideband channel quality indicator information corresponding to multiple sets of channel state information; Or, the wideband channel quality indicator index corresponding to multiple sets of channel state information and the wideband channel quality indicator information corresponding to multiple sets of channel state information are interleaved with each other.

23. The method of claim 1, wherein, Each set of channel state information includes wideband channel quality indicator information and a plurality of subband differential channel quality indicator information, and the subband differential channel quality indicator information is calculated according to the wideband channel quality indicator information.

24. The method of claim 23, wherein, The subband differential channel quality indicator information is mapped into the channel state information report in the form of a numerical value, and the numerical value of the subband differential channel quality indicator information mapped into the channel state information report is obtained by one of the following ways: mapping a difference value between the sub-band differential channel quality indication information and the wide-band channel quality indication information into a corresponding binary value, to obtain a value of the sub-band differential channel quality indication information mapped in the channel state information report, wherein a bit number of the binary value obtained by the mapping corresponds to the difference value; mapping a difference value between the sub-band differential channel quality indication information and the wide-band channel quality indication information into a corresponding binary value according to a preset bit number, to obtain a value of the sub-band differential channel quality indication information mapped in the channel state information report, wherein a bit number of the binary value obtained by the mapping is consistent with the preset bit number; grouping a plurality of the sub-band differential channel quality indication information to obtain a plurality of sub-band differential channel quality indication information groups, determining a reference group in the plurality of the sub-band differential channel quality indication information groups, and mapping a difference value between other sub-band differential channel quality indication information groups and the reference group into a corresponding binary value, to obtain a value of the sub-band differential channel quality indication information mapped in the channel state information report, wherein a bit number of the binary value obtained by the mapping corresponds to the difference value; grouping a plurality of the sub-band differential channel quality indication information to obtain a plurality of sub-band differential channel quality indication information groups, determining a reference group in the plurality of the sub-band differential channel quality indication information groups, and mapping a difference value between other sub-band differential channel quality indication information groups and the reference group into a corresponding binary value according to a preset bit number, to obtain a value of the sub-band differential channel quality indication information mapped in the channel state information report, wherein a bit number of the binary value obtained by the mapping is consistent with the preset bit number; taking the wide-band channel quality indication information corresponding to X sets of the channel state information as reference wide-band channel quality indication information, and mapping a difference value between the sub-band differential channel quality indication information corresponding to other channel state information and the reference wide-band channel quality indication information into a corresponding binary value, to obtain a value of the sub-band differential channel quality indication information mapped in the channel state information report, wherein X is an integer less than K, and a bit number of the binary value obtained by the mapping corresponds to the difference value; taking the wide-band channel quality indication information corresponding to X sets of the channel state information as reference wide-band channel quality indication information, and mapping a difference value between the sub-band differential channel quality indication information corresponding to other channel state information and the reference wide-band channel quality indication information into a corresponding binary value according to a preset bit number, to obtain a value of the sub-band differential channel quality indication information mapped in the channel state information report, wherein X is an integer less than K, and a bit number of the binary value obtained by the mapping is consistent with the preset bit number.

25. The method of claim 1, wherein, The channel state information report includes channel quality indication information, and the channel state information report is determined based on a configured channel quality indication information pattern and / or a channel quality indication information pattern parameter.

26. The method of claim 1, wherein, Each of the channel state information includes a plurality of subband precoding matrix indication information and a plurality of subband differential channel quality indication information, the subband differential channel quality indication information being calculated according to the subband precoding matrix indication information; The plurality of subband differential channel quality indication information in the K sets of channel state information mapped in the channel state information report is determined in one of the following manners: The plurality of subband differential channel quality indication information is divided into a subband differential channel quality indication information group to obtain a plurality of subband differential channel quality indication information groups, and the plurality of subband differential channel quality indication information mapped in the channel state information report is obtained according to the subband differential channel quality indication information corresponding to the plurality of subband differential channel quality indication information groups; The plurality of subband differential channel quality indication information is divided into a subband differential channel quality indication information group according to a preset interval to obtain a plurality of subband differential channel quality indication information groups, and the plurality of subband differential channel quality indication information mapped in the channel state information report is obtained according to the subband differential channel quality indication information corresponding to the plurality of subband differential channel quality indication information groups; Each time, a preset number of subband differential channel quality indication information is taken from the head and tail of the plurality of subband differential channel quality indication information as a subband differential channel quality indication information group to obtain a plurality of subband differential channel quality indication information groups, and the plurality of subband differential channel quality indication information mapped in the channel state information report is obtained according to the subband differential channel quality indication information corresponding to the plurality of subband differential channel quality indication information groups; The plurality of subband differential channel quality indication information is grouped to obtain a plurality of subband differential channel quality indication information groups, and a preset number of subband differential channel quality indication information in each of the subband differential channel quality indication information groups is determined as the plurality of subband differential channel quality indication information mapped in the channel state information report.

27. The method of claim 1, wherein, Each of the channel state information includes precoding matrix indication information and channel quality indication information, and the channel quality indication information and the precoding matrix indication information have different or same granularity.

28. An information processing method applied to a second communication device, the method comprising: sending a reference signal to a first communication device, the reference signal being used for the first communication device to perform channel state measurement at K time instants to obtain K sets of channel state information, where K is an integer greater than zero; receiving a channel state information report sent by the first communication device, wherein the channel state information report is obtained by the first communication device according to the K sets of channel state information, and the channel state information report includes a first channel state information report part and a second channel state information report part, and the K sets of channel state information are mapped in the first channel state information report part and the second channel state information report part; and According to the channel state information report, a corresponding data transmission strategy is adopted for data transmission. 29.A communication device, comprising: one or more processors; a memory having stored thereon one or more computer programs which, when executed by the one or more processors, enable the one or more processors to implement the information processing method according to any one of claims 1 to 27, or the information processing method according to claim 28. 30.A computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the information processing method according to any one of claims 1 to 27, or the information processing method according to claim 28. 31.A computer program product comprising a computer program which, when executed by a processor, implements the information processing method according to any one of claims 1 to 27, or the information processing method according to claim 28.

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